They're basically living together!

Justin Bieber has a real routine going these days, and it consists of going to church and hanging at Selena Gomez's house. We caught the singer arriving at his girlfriend's Studio City pad yesterday, and apparently he didn't feel the need to shower or dress up for her!

The two are planning on celebrating the holidays together, but The Biebs won't score an invite to SG's mom's place on Christmas night, as her family is still coming around to the idea of them reconciling. We wonder what JB will get his lady love as a gift? If you believe the rumors, it might be an engagement ring!

The pair are taking their relationship super seriously this time around, and the "Sorry" crooner allegedly wants to make things permanent.

A source tells us:
    "Justin has been talking to his preacher Carl Lentz about proposing to Selena. He knows he wants her to be his wife, but he also wants to understand the ins and outs of marriage before popping the question. Selena's kidney transplant made him realize how short life can be, and he's been telling his pals he can't believe he wasted so much time hooking up with random chicks. His focus these days is building a future with Selena, focusing on his relationship with God, and making good career decisions with purpose."

He's a changed man!