Any revenge advices?

Im Riley, I've been living with my girlfriend (22) since January 2024. I met her in August 2023. Everything was good at first, but in February 2024 someone texted me saying she was seeing her ex. I didn’t believe it because it sounded fake. 2024 was great. I loved her more than I’ve ever loved anyone. But in 2025 things started going downhill. She got annoying and I told her she had to move out in August. After that I started feeling like an idiot, like maybe I should’ve stayed and fought for her. The next few months I felt depressed and pissed at myself.

In December she called me. We talked, she came back, told me she loved me and that she hadn’t dated anyone while we were apart. The first five days were great. Then she said she needed to go back to her old place to get her stuff. I said fine. She disappeared for three days. I was pissed. When I tried calling her she acted like an asshole. I figured she was still mad about me kicking her out. I apologized, tried to fix things, and she came back on December 24.

Two weeks ago I found a PDF letter on her phone from some guy (mf#1). He said he missed her, wanted to fix things, and had been telling people they were in a long-distance relationship so no one would know what was really going on. They “broke up” December 2nd. She called me December 1st.

Then there’s mf#2 — the ex she supposedly wasn’t seeing when we first started dating. I found their full TikTok conversation. They were sexting, sending nudes, talking shit about me. And that anonymous text I got back then? It was true. She was seeing him when we first got together. This mf dated her when she was 17 and he was 27

There’s also mf#3 (40+ biker wannabe) and mf#4. Same story. Flirting, sexting, while she was juggling the others.

I even found tiktoks she posted like “I cheated on my boyfriend and he never noticed 😇” and “GRWM to cheat on my boyfriend.”

Now I feel used. I pay for everything. She doesn’t work. She expect to bankroll her career, and wants me to pay for braces, dental caries treatment, kids, a house. If I hadn’t found out, I might’ve actually built a future with her and ruined my life.

These past two weeks have been rough. I’ve cried. I’ve been angry. I almost confronted her 2 days ago, but honestly I just want revenge.

I'm not here to read "just move on" I need a real revenge plan.