I (25F) was with my ex (27M) for a year and a half. We met through a mutual friend who he’s known for like 5 years, so this isn’t some random guy he barely knows. A few months into our relationship I found out my ex cheated. I was devastated but I forgave him. We had all the talks, he apologized, promised it wouldn’t happen again, and I really thought we had worked through it. Then I found out he’d been cheating AGAIN for the last 6 months of our relationship. Six months. We broke up and honestly I’ve been a mess. Our mutual friend checked in on me and we went out for drinks last weekend. We were talking about the breakup, one thing led to another and we hooked up. It was definitely a rebound, but I’m not going to pretend I regret it. I actually want to see him again. Here’s the part that makes me feel like an asshole. Part of me hopes my ex finds out. I know that sounds petty but after everything he put me through, the thought of him knowing I slept with HIS friend is kind of satisfying. And I can’t tell if I want to keep hooking up because I like this guy or because I want to hurt my ex back. Maybe both. My ex doesn’t know yet. The friend knows exactly how I’m feeling about all of this, but I still feel like I’m dragging him into something messy. AITA if I keep seeing him, especially knowing part of me wants my ex to find out?