-How long have you been married?
-Has he always done the male bonding trips?
-Could you explain your situation a little more?
You are right if he is married and faithful to the marriage he shouldn't put himself in situations that could lead to infidelity or jeopardize your marriage. If you have told him that you feel uncomfortable about his doing things that normally single men would do that it's time to set some boundaries. Maybe compromise that he can still have guys night but no strip clubs or going out with exes and then make the deal that he doesn't do anything he wouldn't do in front of you, trusting your partner is sometimes difficult but in order to have a happy and healthy relationship you have to have trust in him that he will have self control when put in situations like that and also he has to learn how to say no to this friend especially if the friend is single and doesn't have a wife to answer to he isn't going to think about the sequences of his actions with friends that either have girlfriends and are in a committed relationship or who are married.
It may be the communication that is lacking with your husband that makes you doubt his ability to have self control and not do anything that will jeopardize your marriage, tell him how you feel and what you want and expect from him don't make too many demands at once that will only frustrate him and then he won't want to talk anymore so do a little at a time but cover the one that most bothers you about his actions and think of a compromise that he will at least consider. Try not to sound like his mother some men don't like that coming from their wives. Sound more like a wife trying to make a compromise with their husband and it may mean you bending a little as far as allowing him to have his freedom. Maybe compromise that he goes out once a night during the weekend but ask him to please be respectful of your wishes for him not to do anything that jeopardizes the marriage.