My boyfriend hates it when I go out?

My girlfriend wants me to meet her for a girls night and she lives in a college town so lots of guys. Well my boyfriend said he would break up with me if I went because he knows I will do something...he always does this whenever I am going out! I have never and would never cheat on him! What can I do to make him see that I wouldn't do that?
My boyfriend hates it when I go out?
Post Opinion