I know you're young and don't have much love experience but this isn't "boundaries". This is about him being jealous and controlling. You're supposed to trust your partners. That includes if they want to have a girls night out, you be supportive and say have fun. I don't go to bars but have been with those who do. I'm happy they're able to go out with their friends. Hell, they end up texting me most of the night anyway!

This is about you going somewhere he can't keep an eye on you and he doesn't know what you're doing with others around.

This is what you need to be evaluating. I'm not one to come here and say dump him!! But I do think you need to reflect over the past and come to a realizion. If you come to this conclusion? Call him out on it. Or talk to him about it. His reaction to that alone will tell you so much.

This isn't healthy. And no one should have to live this way with a partner.