My girlfriend has started going clubbing and partying recently with her friends, and I don’t like it. I don’t like the idea of her in a dark room, surrounded by horny strangers and friends who want to fuck her. Two of her friends used to like her and the last party she went to, when I picked her up she told me that one of the guy there kept asking if she wanted to go to the washroom and kept forcing her to drink more. I told her I wanna speak to him but she said he left, so I took her home. I know she would never cheat on me but every time she goes out now im wondering where she is and what she’s doing. I don’t like feeling this way. I know I can’t control her but I can control what I do, and I told her I’m not gonna be her boyfriend if she wants to go clubbing without me. She said she needs a day to think, she kept saying things like “but they don’t even like me”, “he stopped asking once he found out about you” but I don’t care. I know why men go to clubs and I don’t want her in a setting like that. Am I being an asshole of is this a valid demand?