Need good ideas for responding to my husband cheating

You can spend a lot of time and energy trying to extract revenge but in the end it will not have any additional effect on him but it will cost you your time and your emotions. You are getting a divorce, that is the solution you have chosen. If your marriage was a good one, he will know in time what he has lost and it will haunt him for years. Forgiveness is not about letting him off the hook, it is about letting the hate go that holds you hostage so you can be available for someone else.