mb28 go out to a bookstore and buy NOT JUST FRIENDS... there is TONS of advice that's relevant to you right now... most of what we are telling you is in that book... its an easy read and FULL of GREAT info.
When my W was having her affair I bought half a dozen books on infidelity.. I left them lying around the house. It wasn't deliberately to annoy her but I was pleasantly surprised it stressed her out like crazy... I left them right out in the open and kept my bookmarks in them... it made her feel terrible.
You may find that effective.. buy NJF and a half dozen Infidelity books from amazon or something and put them out... read them too... Your H may even pick one up...
If he shows interest...show him pp 380-81 of Not Just Friends