GASP!  There must be some soft of logical explanation for this!

Don’t worry – there is.  The 17-year-old hottie was only getting his pucker on with another lady in order to film the music video for his latest single “Mistletoe”.

According to model Ali Williams, who locked lips with the pop star, Bieber is a “great kisser” and a perfect gentleman – not a bad combo!

It wasn’t awkward at all… He was so nice and relaxed. Justin was very respectful, so it was comfortable.

Williams also revealed that Bieber’s longtime GF Selena Gomez was on-set during the entire kissing scene and was “totally professional” about it.

Totally professional or totally plotting which model hottie she was going to use for her next shoot?

Pop star also donates $100,000 to Las Vegas elementary school with help of ‘Ellen’ show.

By Jocelyn Vena

Photo: ABC

<P>Justin Bieber was enlisted by Ellen DeGeneres to help give back to Whitney Elementary, a Las Vegas school that helps underprivileged children. And in addition to donating $100,000 and $100,000 worth of toys, the <a href="/news/articles/1673555/justin-bieber-believe-charity-drive.jhtml">always-charitable singer</a> performed for the room full of Beliebers.

</p><div class="player-placeholder right" id="vid:702340.id:1672718" width="240" height="211"></div><p>

Bieber even <a href="http://www.youtube.com/watch?v=mfkjI7PR0bg&feature=player_embedded" target="_blank">answered some burning questions</a> about his hair, his favorite color and his rise to fame. But, perhaps it was his response about his lady love, Selena Gomez, that had the room most giggly.

"What do me and Selena do on the weekends?" he pondered to the room full of school kids. "We go to the movies. And we kiss," he whispered, later laughing, "No, we don't do that."
He answered a number of other of the kids' inquiries in a rather quick-fire round. "Do I miss home? Yes, very much," he said. "Cause I'm always traveling and I'm always away from a lot of my family and friends. So, it can be hard. But, once I get to go home and see my family, it's always a pleasure."
Before leaving, he had these words of wisdom for the kids: "Be nice to each other and treat each other with respect and grow up to be people of character."

The <a href="http://ellen.warnerbros.com/2012/01/justin_bieber_visits_whitney_elementary_0104.php" target="_blank">episode</a> aired Wednesday and when he <a href="http://www.youtube.com/watch?feature=player_embedded&v=YesUywDQfjU" target="_blank">chatted</a> with the school's principal, Sherrie Gahn, he opened up about his own struggles growing up in Canada. "I'm here to bring a smile to these kids' faces. For me, I grew up and I didn't have a lot. We went to food banks to get food for me and my grandparents. Really, if I didn't have my grandparents to help me and these kids they have you to help them," he said. "And it's really special."

<i>What questions do you wish Justin Bieber answered? Let us know in the comments below!</i>

<img style="visibility:hidden;width:0px;height:0px;" border=0 width=0 height=0 src="http://c.gigcount.com/wildfire/IMP/CXNID=2000002.11NXC/bT*xJmx*PTEzMjU3NzI1ODE3MjMmcHQ9MTMyNTc3MjU4NTk2MyZwPSZkPSZnPTImbz*xNmY2YjZjYmU*Mzg*YmU2OWJhMjMzZjcz/ZTM*ODg4OSZvZj*w.gif" /><object name="kaltura_player_1325772580" id="kaltura_player_1325772580" type="application/x-shockwave-flash" allowScriptAccess="always" allowNetworking="all" allowFullScreen="true" height="316" width="480" data="http://cdnapi.kaltura.com/index.php/kwidget/wid/0_lkrakkqw/uiconf_id/5455371"><param name="allowScriptAccess" value="always" /><param name="allowNetworking" value="all" /><param name="allowFullScreen" value="true" /><param name="bgcolor" value="#000000" /><param name="movie" value="http://cdnapi.kaltura.com/index.php/kwidget/wid/0_lkrakkqw/uiconf_id/5455371"/><param name="flashVars" value=""/><a href="http://corp.kaltura.com">video platform</a><a href="http://corp.kaltura.com/video_platform/video_management">video management</a><a href="http://corp.kaltura.com/solutions/video_solution">video solutions</a><a href="http://corp.kaltura.com/video_platform/video_publishing">video player</a></object></p>

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From Britney and Jason to K-Stew and R-Pattz, we look back at the best high-profile pair-ups of the year.

By Jocelyn Vena

Photo: WireImage

From young love to established romantic empires, 2011 was all about PDA. Some of La La Land’s most A-list couples weren’t shy about flaunting the love they share. From musicians to actors to everyone in between, the last 12 months were all about sharing the love. As the year winds down, MTV News is reflecting on some of our favorite couples of the year.

Britney Spears and Jason Trawick
The couple walked red carpets, gave each other shout-outs at awards shows and even got naked together in Britney’s “Criminal” video, but it wasn’t until December that they decided to make it official. After two years of dating, Spears and Trawick took their relationship to the next level, with confirmation that Jason put a ring on it. The pair celebrated their love and their impending nuptials in Las Vegas. Their engagement sparked headlines and left Spears “glowing.”

Who is your top couple of 2011? Vote in our Newsroom poll!

Justin Bieber and Selena Gomez
Summing up Justin Bieber and Selena Gomez‘s year into a little blurb isn’t that easy. They went to events together, and Bieber lavishly rented the Staples Center just to watch “Titanic.” And when they weren’t chilling out, they were giving shine to each other’s hard work. Or bringing each other gifts. Remember when Bieber showed Selena his pet snake, Johnson, at the VMAs? Yes, we knew you wouldn’t forget.

Kristin Stewart and Robert Pattinson
The two “Twilight” stars seem poised to make our favorite couples lists for years to come. While in years past, they’ve remained under the radar, this year they came out of their shell and opened up about one another in interviews. Who could forget the time that K-Stew referred to her not-so-mysterious “English” boyfriend in an interview? We’re assuming not R-Pattz.

Beyoncé and Jay-Z
OK, so Beyoncé and Jay-Z have been together for, like, an eternity, but it wasn’t until this year that the pair really had everyone buzzing. When Beyoncé stepped out at the VMAs, her expanding midsection and flashy performance was the ultimate pregnancy announcement. Jay-Z didn’t seem to mind all the attention. He celebrated the baby news in the audience with his pal Kanye West.

Wiz Khalifa and Amber Rose
Amber Rose rebounded from her relationship with Kanye West by falling in love with Wiz Khalifa. The couple took the world on their wild relationship ride, from doing interviews together to sparking rumors that they had tied the knot. These two kept everyone talking and they don’t seem to mind the attention, or spending lots of time with one another.

Who was your favorite celebrity couple of 2011? Tell us in the comments!

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Best Couples Of 2011

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Justin Bieber shakes hands with President Obama as he performs at the 2011 Christmas in Washington at the National Building Museum on Sunday night (December 11) in Washington, D.C.

The 17-year-old musician (in Dolce&Gabbana) landed in the nation’s capital just a few days ago with girlfriend Selena Gomez for the big event, which will be broadcast on TNT this coming weekend.

“Feeling good. Just had some fun at rehearsals and now we r ready. Time to sing for the President. #canadianrepresenter,” Justin tweeted just before the audience filled into the space.

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Justin added, “Great night! President Obama is one cool Prez. He told me he was “chillin.” #PresidentialSWAG”

This is the second time Justin has performed at the annual event. This year he sang “Mistletoe” and “Away in a Manger” for the closing medley.

The 2011 Christmas in Washington will air on Friday, December 16th @ 8PM ET/PT on TNT.

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Selena Gomez walks along a water tank during her photo shoot for her upcoming fragrance at Smashbox Studios in West Hollywood, Calif., earlier this month.

The 19-year-old wears a gorgeous purple dress while walking in pink-lit water.

Selena just released a new video, asking her fans to help her pick out the scents final notes. Be sure to vote for your faves!

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Selena, boyfriend Justin Bieber and her family were also spotted at LAX airport earlier this week, heading to Mexico for a little down time.

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Selena Gomez puts her head on boyfriend Justin Bieber’s shoulder on Sunday evening (November 20) in Los Angeles.

The 19-year-old entertainer and Justin, 17, left the AMA’s in style — in a chauffeured vintage Rolls Royce!

Justin had nothing but praise for his friends who won at the awards show.

“happy for my dude Bruno Mars – couldnt have gone to a better guy. well deserved. and Taylor Swift and Nicki Minaj CONGRATS Ladies!” Justin tweeted.

Earlier in the evening, Selena glammed it up on the red carpet in a Georgio Armani gown.

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Selena Gomez sings “Love You Like A Love Song” on The Ellen DeGeneres Show in an episode which aired on Thursday (November 17) in Burbank, Calif.

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The 19-year-old entertainer also dished to host Ellen DeGeneres about how her boyfriend Justin Bieber won’t listen to her when she tells him to pull his pants up!

Have you checked out Selena’s new music video for “Hit The Lights” yet?