Nobody did anything wrong. He didn't make a committment -- and the fault really may have been her's we don't known -- and she left him, which she is a allowed to do.
If he did make a committment then dumped her, that would have been cruel.
Huh?
Oh, I see what happened. The Resurrector of Dead Threads has returned.
Give me a minute, I gotta go back in time about two years so I can remember what this old thread was about, what I said, and who I wuz arguin' with about what...