I think it's up to you whether or not you contact him. If you break NC, can you slip back into it easily if you need to, or will it be an issue to struggle through it again?
What do you gain by breaking NC? Think about it and let him hang a little before you decide?
ME: 38 BF: 40 T: 10y, no kids, no M (by choice) BD: 7/14/14, BF admits to PA, wants out, lies about new R. 10/1/14: I move out, BF lies about move in with OW 12/4/14: OW confronted, reveals all the lies