Fiancé has got me worried.

My fiancé goes to work from 3:00 and gets off at 1:30 in the morning. His first break is at 7 he has never came home to eat or even shoot me a text but these last two days he's been coming home to eat and when he did today he barely talked to me. I felt hurt. And last night he came home late saying he got off of work late and he's gotten home late once a while back. Last night he came home in a good mood just acting like a kid and wanting to have sex when before he had to go to work I wanted to have sex and I kept messing with him and he got pissed off. Just when he came home last night and was in just such a good mood. It just scares me that he might be messing around or thinking about it.