I don't think you received good advice about mc...... it needs to be addressed, if you pretend like the affair didn't happen you just bury the anger.
I strongly suggest you find a good mc that has a background in solution based therapy.
Me: 35 husband:39 Sons 16 and 11 from my first marriage Twins 5 (boy/girl) Daughter 3 Affair bomb 2/27/14 He moved in with ow 3/13/14 OW kicked him out 6/15/14 4/2016 he seeks help for sexual addiction