Boyfriend Problems

So my boyfriend comes in from the bar last night, he had been drinking a little bit, which I do allow him to go out some times because majority of the time we are together. But in his Unsober mind, he told me that he does flirt with other girls, pretty much saying if a girl says he looks good he will thank her and compliment her back. I know for sure if I did something like that he would have a problem. Maybe I should start! Since he does it! He also came in rambling on about the fact that as long as I'm carrying his child I'm pretty much not allowed to talk to any other men. Is he just being a complete idiot or am I just being sensitive?