Tl;dr: Started TRP, made great progress. Met ex at party, got involved with her again. Found out she fucked almost all my good friends when I left for Vegas. Got sucked back into relationship, back to being a beta pussy. In dire need of advice and a kick to the balls.

20/M/US I found TRP about 8 months ago, when I first found it, The Red Pill had a huge impact on my life. I was reading, lifting, running, getting my life in check. I was really making incredible progress that I've never seen myself make before. Started actually feeling AF (have always been a self conscious chubby Beta) One day I'm at this party, chatting with old friends, making re connections, hitting on girls. Having an honest good time not thinking of myself. Staying in the moment, was just grasping the concept of frame. Everything was going great. Then all of the sudden my buddy who owns the house pulls me aside and informs me that my ex good friends invited my ex girlfriend. Who I had literally JUST gotten over after months of depression. (TRP is what got me out of that vicious cycle of self hatred and feeling bad about myself like a little bitch.) He tells me she's in the front yard, and my heart sank. He asked if I wanted him to kick her out held frame and told him that I didn't give a shit. Well we ended up talking that night and we went home to my place and fucked. Ever since that day we were FWB and I didn't want to get to close cause I knew she was my ONEs. Well I fucked up and developed feelings for her. Asked my friend for advice. He informs me that she had fucked THREE of my good friends and two other random in the short time we were broken up (8 to 9 months I had moved to Vegas for a while) She had lied to my face about this. This is where I fucked up. I forgave her. Took her back. Ever since then my life has gone over downhill. Gained back a lot of weight, stopped reading, stopped kicking ass. Guys, I have made a full reversal back to being a beta bitch, and ruined reputation by taking her back. Now she doesn't even respect me anymore talking to random dudes behind my back and whatnot. I need someone to explain what was going on behind the scenes the whole time (so I can avoid a situation like this again), I need to get some guidance on what to do now, and I need to know how I can get back to where I was. I am ready to kick this bitch to the curb, but the only thing stopping me is the thought of her fucking more of my friends. Because that completely enraged me when I found out. I don't know how to break it off. I have gone back to my habits of over eating, feeling depressed and frustrated, being lazy, smoking pot, overall being a fucking pussy. TRP, I need a kick to the balls.