My three-year relationship is over, and I can't let it go. What should I do?

My situation is exactly the same as yours. This woman can contact that person while sleeping with you, which shows that she doesn't love you two, but is comparing who is more suitable for her. I suggest you let go. If you cling to your past feelings, your good fate will also become evil. As long as you take the first step, leave the rest to time. You will be miserable, uncomfortable and uncomfortable. But you should know that long-term pain is better than short-term pain. Only by letting go can you get the next relationship. Don't get into trouble, let go, even if it is hypocritical, let yourself be generous, bless her and leave this chaos with your head held high. Don't wait to look back, you look down on yourself.