My H goes through SAD every winter, there really was no way for me to know that this winter was any different. He never expressed how he was feeling and I thought he would come out of his funk in the spring like he always did not run off and have an affair. We were still having sex a few times a week.

My idea was not to shame him but like I said I could no longer keep his secrets. I can't imagine my kids finding out a few months down the road the real reason for our separation from someone else. I do feel they deserved to know the truth.

Yes, it probably did drive him farther into the arms of the OW. There's not a lot I can do about that now.