^^ I wouldn't say you blew it. If he's still reeling from a bad breakup, then either:
a) he probably wasn't ready to call you, and wouldn't have regardless of anything you did/said; or
b) he probably wasn't ready to call you, and if he did he wouldn't have been ready to date you and it would've been a mistake to date him.
Do you want to go out with someone who is still feeling hurt from a (recent?) breakup? Because you don't need someone who still mopes for their ex.
I know unrequited crushes are painful, but I feel that you're better off.
I remember back when I was in university, living in dorms on a floor with a lot of really good-looking women around, and being rejected quite severely (I overheard a group of girls saying something like "That <my>, he's so weird, eh? What the hell?"). I was hurt, but then after some long walks and a lot of self-reflection, I learned a lot about myself, and realized that it's better to be single then to waste my time pursuing people who thought badly of me. So I stopped trying so hard at winning the affections of women who didn't deserve my attention. It was a gradual process, and one that involved different types of rejection (by people who were genuinely friendly, but only saw me as a friend), until I found the woman I would marry.
At the end of the month, we'll be celebrating 3 years married. Good times
-Sparks Nevada, Marshal on Mars
"Who cares what evil lurks in the hearts of men!"
"Unless evil's carrying the Martini tray, darling."
-Frank and Sadie Doyle