Justin Bieber Selena Gomez Living Together: Couple Are Taking "A Huge Step" [VIDEO]

Justin Bieber and Selena Gomez are moving in together.

Justin Bieber And Selena Gomez Spend The Weekend In Vegas Together

Although Bieber and Gomez are still very young, 20 and 22-years-old respectively, the couple is talking about moving in with each other. Despite their sometimes on-and-off relationship, the pair is very much on, and working on their trust issues.

"Selena and Justin are 100 percent together right now, he's asked her to move in with him and she couldn't be happier," a source told Hollywood Life on Sept. 17.

Justin Bieber And Selena Gomez Were "Kissing And Flirting" At A Friend's Bowling Party

"She's still being cautious, she's not going to give up her place, that way if anything goes wrong or if she decides she needs some space, she'll have her own spot to go to. But, officially she's going to be living with him. It's a huge step," the source added.

Bieber has apparently placated Gomez's concerns over infidelity, which is another step in the right direction. Hollywood Life reported he promised her he will be tamer, hopefully helping the couple work through their issues.

"Selena trusts him. She had to let go of her jealousy and stop worrying about other girls. He's promised her that she's the only one, and she believes him," the source said. "Since they got back together, he hasn't given her any reason to worry - so she's not going to."

This news comes after a week filled with Jelena coverage. The couple was recently spotted at a Los Angeles bowling alley celebrating a friend's birthday, and before that, they were seen lounging by the pool at Las Vegas' Hard Rock Hotel & Casino.

PDA and all, Gomez and Bieber are letting the world know they are back together, one sighting at a time.