HI Oneeleven,
i get asked this all the time and have thought about this in great lengths.

If H were to come back hat in hand and willing to work on this i feel that i would have to give him a chance - even to be confident in my own decision on whether i could trust him again. I honestly can't say right now that that trust will come back. I do know that it would take work - lots of hard work and i think only then would i be confident in making a decision on whether i could trust him again. i do know that alot would have to change. i know i'm not the same person i was in our relationship because of all of this and because the work i've put into bettering my self and fixing myself, both on my own and with a counsellor. If he were to take steps to change i think i could (at some point) trust him again.