I'm trying to comfort myself as much as anything.
By the way, I've been catching up with a few old schoolfriends I've not seen since my early 30s recently. So far, all of us have split up from our wives/long-term partners from those times. Not one of us is still with the same woman we were with then. In fact, one of them is now living on a boat in Norwich post-divorce in a sort of Alan Partridge-esque twist.
But anyway, it seems that nobody's relationships last. Which makes me feel better about things.