I am engaged to be married later this year. During a really rough patch, I slept with my ex-boyfriend one time. It was just the one time, and I immediately cut all ties with him afterwards. I know that if I tell my fiance, he will leave me. But he doesn't deserve to be treated like that. I can't bear the thought of losign him. What should I do? Should I tell him? Should I just forget about it? It was only the one time, and it will never happen again. My ex-boyfriend kept asking me to be with him one last time, and I kept saying no, but one day when I went over to his house to talk to him, I was upset about some things and was feeling very depressed and overhwelmed with all the wedding plans and school and church responsibilities, etc. I am not saying this is an excuse in ANY way. My defenses were down, and I did something stupid, and I am paying for it emotionally everyday. Please help me!!! I don't know what to do.