I'm not sure that this is the right place for your post. You might want to try the HT Forum.
I suspect that it's not advice you're looking for, but validation.
Good luck.
*edited to say that my when my ex-husband left me and our very young children for someone else, he said, "I don't love you anymore, and I'm not sure I ever did love you." By the time he realized he'd fucked up, I'd already moved on.