I'm not being crazy right?

so my boyfriend and I are both 20 and before I got pregnant we went out all the time and drank and what not and I'd go with my friends. and when I got pregnant my "friends" sort of all disappeared and boyfriend and I basically just hang at home all the time and he goes to his friends house on Friday nights usually. and drinks beer after work at the shop pretty much every day. I never ever have a reason to go out and tonight we got free tickets to a concert that I had really wanted to go to. he said he 'doesnt feel like going' but then as soon as he got home said 'im gonna go have a few beers with the guys' like this was the one thing I ever want to do and I'm really upset and he thinks I'm crazy for being upset