You don't feel homicidal when he starts dating someone else
In fact, you're thrilled for the both of them. Especially since you're the one who set them up in the first place. After all, just because the two of you didn't work out doesn't mean he shouldn't find happiness with someone else. On the flip side, if he happened to know someone who might just be your soul mate, you're sure he'd do the same for you.
[Photo via @micheabane]