I know it doesn't and won't sound like it to you, but he did you two huge favors without intending to. First, he demonstrated what a spineless piece of crap he is by not having the guts to say this while you were still together (and saying it over the phone when he finally did). Second, and more importantly, he let you off the hook for that guilt for admitting (without knowing that that's what he was doing, I'm sure) that HE WAS THE PROBLEM ALL ALONG.
xxxx