OK- stop the phone calls, or only let him speak w/ the children- stay mysterious and happy if you do speak to him, stop the ILY's and I miss you texts or e-mails...detach and be happy or act happy w/ the way things are.
I guess that's the best advice I can give-
You've already asked about therapy, so you don't need to ask again.
Some may suggest you go ahead and file, I don't really know what the right answer is- but keep asking around.
Share your feelings here, if you speak w/ H, do not get emotional or do and R talk.