The relationship is dead. The sacrifices will do nothing.

The problem is that your trust in her is forever be shattered. That seed of doubt will forever be planted in your mind -- rightfully so.

I've been in a similar position with an ex that cheated multiple times during our long-term relationship. I laid out "sacrifices", slowly lifted them and took her back. The problem is that I never trusted her again AND she eventually began cheating again.

You need to remain broken up and cut her out of your life completely. Rely on your buddies and support system. Have some heave cries and begin moving forward with your life. It's going to be hard, but future you will thank you for moving on.

Again, I've been in your position and kick myself for being naive and allowing for that person to rip my heart out again. Cut your losses and begin moving forward with your life.