If you have nothing to feel guilty about the bachelor's party incident, then go to marriage counseling. You do want her to trust you, don't you? If it makes her feel better, then go. This way, it will give her a peace of mind.

well he should fee guilty, i know that she had to unhook his pants or shorts, and boxers, and she mighve had to prep him if he wasnt already hard. so he couldve stopped it during any one of these things i mentioned.
but i m prove of you for stopping it.....if that's the truth.
you can win your wife trust. you have to tell her how much you love her and how much she means to you. is she a part of the air that you breath.
you can do romantic things also. bring her flowers, rose petals in the bed, soft music, candle lite room. when you make love to her do these special things for her so her mind wont wonder off to that horrible day.
a perfect love is forgiving.