You want to go out drinnking with your friends. He doesn't want you to go out drinking with your friends. There's a very simple solution to this problem: Go out drinking with your friends.

He doesn't get to dictate your behavior. He doesn't get to tell you who you're allowed to spend time with or how you spend that time. I don't understand why you would even begin to entertain the idea that he gets to control you like this.

"Honey, we've had this conversation several times, and I understand how you feel. However, these are my friends, this is my last semester of college, and I want to go out drinking with them, so that's what I'm going to do. It clearly bothers you, so we're just not going to talk about this anymore, because I refuse to let you make me feel bad for living a normal life. That's my decision. If you have a problem with that, then you should probably find a different girlfriend."