I was never particularly affectionate, and communication wasn't that great, taking each other for granted. I love her greatly, but I foolishly didn't treat her that way. My lack of affection toward her (I've never been a terribly affectionate person) and our lack of communication gave her serious doubts about the relationship.
I just read your first post from 13 years ago. It's interesting that both partners cited your lack of affection in the breakdown. Didn't they know that about your personality before they married you? It sounds like you view this as a flaw, so I wonder if you acted differently when courting them vs. after marriage.