Initiate no contact and do not respond immediately to any attempts at contact, and then only for important business (financial, legal, or child-related).
If they text or email you, don't respond right away. If they call you, let it go to voice mail. Respond when you have time; ideally, you will have other things you are doing with your time and thus have good reasons not to contact them. ("I'm sorry I didn't call back, but I was out.")
Me: 44, Wife: 39 M: 17 years T: 20 years Bomb on 08/25/09 1/13/10: MC started 1/28/10, 2/8/10: More bombs 8/28/10: Wife moved out No talk of D, no movement