I feel that like MrBond, the way you treated your H when your FIL was sick, may have played a part in who your H chose to be with. You just can't treat your IL's in a resentful way, and expect your H to sit back and like it. And you know blood is thicker than water, so most MIL's will choose their S's even if their S's are cheating. I know this doesn't endear MIL to you, but you have to sometime give up the resentment and decide to love your H or let him go. I know you want to have him come back, but exactly what are you actively doing to help yourself? Going to support groups may not be helping you if the group just does the same old thing every time y'all meet. Going stagnant is no help. I realize you have gone dark with him, but when you do these things, you have to sit back and think about whether or not it is working, and something else should be done. Perhaps it is time to initiate some form of contact, even if it is by phone to discuss S. With Christmas coming up, there must be something to talk about. Some sort of present you were thinking of for S, that your H may want to talk about. You could be very pleasant with your H, and let that be a start.