Please help i'm so confused should i be angry with what he did or its normal.i need men and woman help!?

my partner and a few of his friends went on a uni trip to america and he kept bragging and telling me he would go to hooters, i didn't think him and his friends would get round to it because their timetable was so busy( my partners friend thats with him has a girlfriend they have been seeing each other for a year) and i have been seeing my boyfriend for 6 months, he did go to hooters, sunday night i think it was. and one guy that went with them is a complete **** and when he was in hooters he left a facebook status saying"i'm in hooters and soaking" and another one"the girls in here are on a different planet!!" i am annoyed with that comment, even though i don't like him and it wasn't my partner saying that it has annoyed me as i no my partner is probably thinking the same thing, should i let it go? i no my partner would of thought the same thing because he buys all the magazines with naked girls in, would it get to you? why do guys do this? i am insecure as it is and just to think my partner might of commented the same things is horrible, men how should i react? ladies what would you think? i no he didn't cheat but just thinking gorgeous girls in hot pants are around them is enough to make me annoyed. thanks in advance