I vote give him another chance but be up front as Ali suggested....but it is your life and your decision. I am the not an example of how to do this right!!
I know it isn't enough to be the reason, but if my H acted like he truly wanted to try again (including the affection you are getting, I haven't had a real hug or kiss in sooooooooo long), I would let the door open to seeing what happened. But I am a sucker for my kids and what they want (their family together) so I don't think clearly...
How have you been apart from H? Have you worked on your 'fall line' of jewelry??