I agree with Trying2 but honestly........I wouldn't tell him EVER. What could be gained? Sometimes we think we want to tell our SO things just so we can absolve ourselves from guilt, but thats just putting the crap on the other person. There is nothing rightous or loving about that. In fact, I'd almost say its cowardly. As Trying2 said, telling your bf during the 'heart-to-hearts' months ago, when you two weren't really a couple anymore, would have been the time to tell, if you felt you HAD to...but you didn't. So that's it. Game over.

If you have to confess, find a priest. But for heavens sake leave your bf out of it. You confessed to us. We know. He doesn't have to. He has no 'need to know'. It won't make your relationship better, stronger, more committed in whatever capacity it is right now, or will be in the future. So let it go. Forgive yourself and move the f**k on.

As long as you don't act impulsively in the future in this manner, whether you're with this guy, or someone else, then there is no reason to keep beating yourself up, and really...after awhile, it will look like you're enjoying being the 'bad guy', rather than feeling guilty and horrible. If you actually love this man.....then either let it go, or let HIM go....but whatever you do.....DON'T TELL HIM.

ffs!