It is very difficult! YOu already know, good things will come from it tho. One of those things is not wondering and worrying about what he is doing. It takes time, and even then thoughts will seep thru. Be patient with yourself. Follow your dad's advice. Let H deal with bday on his own.
H will say and do all kinds of things to jerk your string and suck you back in, test the waters, etc. You cannot predict that what you say and do is interpreted as you intended, NC sends the clearest msg. Did you send him a NC letter that clearly states your wish to stay in the marriage, and your boundaries?? It will help assure you that he knows where you stand and H can refer back to it.
"If you strike me down, I will become more powerful than you can possibly imagine!" 1st thread