Bumper Falling Off??

Hey,

Well, I was messin around with the front headlights this afternoon, and after I got them all put back together, I noticed that the passenger side front bumper was hanging down alot farther than usual. I don't know what could have caused this, and I know it wasn't like that before I messed with the headlights. Anyone know what might be the cause of this? It's just hangin down farther than usual, looks like it is almost detached somehow. Thanks.

Allen