M32 F20… that’s your first problem. She is still maturing and that’s clear from the fact she doesn’t know how much she can drink.

Cut all three from your life but do her a favor. Be blunt to her. Tell her, her actions cause this. There is no fixing it and that you forgive her but can not dare her again.

And I’ll help you right now too; you will never get over it. I promise you won’t. That act of betrayal from her and your friends will stick with you forever and shape every relationship you have. I am sorry this happened to you. Give yourself the time you need then get back out there. And to each his own but I recommend you look 25+. From my experience women start to mature around 23ish, find someone that is going to tear you respectfully.