We guess they can't be together 24/7!

Justin Bieber went to church last night in LA after returning from a religious conference in Washington with girlfriend Hailey Baldwin, but the model didn't tag along for services. Perhaps she was busy unpacking?

Not to worry, though. Apparently, the two are serious about each other this time around. That's bad news for Selena Gomez!

“It’s obviously way too early to say whether things will work longterm for them but that’s where Justin’s head is at. He respects Hailey and values their friendship way too much to just fool around with her. If he didn’t think this was going somewhere he would have just kept things in the friend zone," a source told Hollywood Life.

"Justin’s a romantic. He wants the happy ending and it’s starting to seem more than possible that Hailey could be his happy ending," the source added.

His "Come & Get It" songstress ex knows she'll always be his #1, so she thinks his romance with Hailey is "hilarious." Ouch!

"Hailey must recognize by now that she will always be Justin's second choice. Selena doesn't really care what Justin does with his love life anymore. In the end, Justin turned out to be exactly the same person he was — a selfish and immature kid who only cares about himself," another insider told Radar.

Bieber fever is a real condition, folks!