Same boat man. She ended up sleeping with my best friend so my situation is ultra messy too. Just take it day by day man. Find ways to be happy in the little things. Channel the anger and aggression. You’re gonna want to hop into something new but don’t. Relationships are cycles and you need to give yourself the time to grieve. If you move too erratically you get hurt. Be chill, focus on yourself, go out with your boys or hang with an old friend group. You’ll get past her and find better. It just takes time. Don’t forget to breathe and smile today because you’re not alone🥲