Um, did you see the guy's photo? I'm going to guess no one breaks up with that guy unless he does the old trick of acting like a jerk until the other person wants out.
Plenty of people that are attractive and good (or at least non-jerks) that get broken up with. They don't necessarily have to be a jerk, just not a good match for their partner. Politics, views on marriage, mismatched libido, kids, etc.
Some studies suggest we date people of compete able attractiveness. Whoever he was dating was most likely as good looking as him and would not consider it a blessing to stay with him.
I dated someone once who was really great, did everything right, perfect on paper. However we broke up because I just didn't feel anything, there was no chemistry and sex was boring and lifeless. Sometimes that happens and its nobody's fault.
