I’m sorry, and this probably won’t be what your heart wants to hear. But listen to your brain. Don’t do it. Ive been in 3 long term relationships since I was 19. Im 27 now. And 2 of those relationships ended with my GF cheating on me. First one I tired to come back and work things out but no matter how many sorrys were said she ended up doing it again. And sadly it hurt even more the second time.