None of his exes talk to him
If he has one or two exes who hate his guts, that’s normal. But if every single girl he’s ever dated would slash his tires given the chance, that’s no coincidence; the common denominator in all of those relationships is the guy. And if he didn’t cheat on all of those women, he at least acted shady. Women don’t hate a guy for being wishy-washy, or wanting different things than them. The guy has to really mess up to be hated.