Sounds to me like he can't get over your wife, not the other way around. But why oh why did you stash Lydia's body in one of the private rooms of the chapel? There is a perfectly good lake just outside of Riften where people are prone to losing things and them never being found by anyone ever against except for yourself.
Lydia deserves better being tossed into a lake. I'm not sure how or why she died, nor how she made it to the initial ceremony in such a condition, but she more than earned her place in the Hall of the Dead amongst her ancestors. And I was being shouted at by Temple staff to get out, so it was somewhat hastily done.
And I might have to let Aerin slide for now, while I figure out what to do. But I swear to the Eight, if I find them sharing a bed, I will buy a couple Black Soul gems to ensure neither of them ever even see Sovengard!