Why don't Justin and Hailey look happy after their Hillsong service last night?

The couple seemed a bit agitated as they left their Wednesday night worship. Perhaps the stress of having a possible wedding hanging over them is too much? For now, it seems they've put their nuptials on hold as Justin tries to get healthy. A source tells People magazine, "Hailey keeps supporting him. They will still have a wedding when they feel they are ready. The most important thing for them is that Justin is mentally healthy."

The source goes on to say that treatment has helped Bieber and that being back in the studio, making new music, is motivating him: "It seems his treatment has helped him a lot. It has changed the way he thinks. He is much more focused on taking one day at a time. It’s when he starts thinking too far ahead that he gets stressed out and feels pressure."

Hey, no rush to have a wedding ceremony, guys -- you're already married!