Why can’t he get over his ex. When I’m kind of better?

I’m not saying I’m better because of looks or anything that’s all subjective but people have said I’m more attractive but pretty is not the point here. she was a pot head with an awful family who forgave him for his cheating and stuff I’m in school and doing well for myself I’m very generous to him during his broke weeks and he still misses her? It’s so frustrating they where together for 5/6 years, we’ve been together for 10 months it hurts.
Why can’t he get over his ex. When I’m kind of better?
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