Justin Bieber basically confirms he's back with girlfriend Selena Gomez, tweets sexy Christmas picture

We never know quite where we are with Justin Bieber and Selena Gomez's relationship.

Justin Bieber posted this snap of on/off girlfriend Selena Gomez. Copyright [Instagram/Justin Bieber]

But now it looks like the pint-sized popstar has CONFIRMED he is back together with his on/off girlfriend for Christmas.

The Canadian singer posted an Instagram snap of the Disney star looking rather sexy in a red dress from her ELLE cover shoot earlier this year.

The picture, which he shared on Christmas Eve, got nearly 200,000 likes on the social networking site, with followers remarking that it looked like they were back on.

Selena and Justin are eternally off and on. Copyright [Wenn]

One commented: "Lol they're back together."

But the shot also drew abuse from jealous Beliebers, with one posting: "Gomez is ugly and fat fool!!"

Justin also seemed to be alluding to the fact the pair are back together again in his pre-Christmas tweets.

He posted: "i dont need no presents girl your everything i need" :) #CHRISTMASEVE

"im where im supposed to be" [sic]

And there was picture evidence that Justin and Selina are back on - with pap shots of the pair snogging at Salt Lake City (Utah) airport doing the rounds.

The duo were said to have gone on a romantic skiing trip together with fellow pop couple One Direction's Harry Styles and country star Taylor Swift.

A source told RadarOnline they couldn't keep their hands off each other:  “They were very affectionate with each other. They were kissing on and off and they just sat together and talked and looked totally in love.”

Justin and Selena reportedly went skiing with Harry Styles and Taylor Swift. Copyright [Twitter]

The pair flew home separately as they are set to spend Christmas Day with their respective families.

Justin, 18, has reportedly been treating Selena, 20, like a princess since they reconciled and was lavishing attention  on her at the recent Jingle Ball in Philadelphia, Pennsylvania.

An insider said: "Justin is crazy about Selena. It's just so obvious with the way he looks at her. Justin had a lot of people wanting to take pictures with him and talk to him at the Jingle Ball 'meet and greet' after the show and he just made sure to include Selena in everything -- he kept looking at her, smiling at her, they were side by side most of the time. It's like he really made an effort to make her feel like his princess."

Taylor is reportedly responsible for the reunion after encouraging Selena to forget about her "trust issues" with Justin.

[Related story: Harry Styles and Taylor Swift spotted in hot tub together]

[Related story: Justin Bieber and Selena Gomez seen kissing after romantic ski trip]

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