I don’t like my boyfriends friend

I have a question, if you are in a relationship should u be going to a party or a club ?? Because every time my boyfriend hangs out with his friend they end up at one of the other and I don’t trust him because my boyfriend even told me that same friend tried to get him to talk to a girl and I have trust issues so should I trip about this ? Every time he’s with him they do stuff that I DONT like at all ughhh what should I do ?