Momoka is the polar opposite of Minato and they deserve everything they get.
If we boil down both characters to their interactions and relationships with others, Minato is as much as a jerk as Momoka.
In season 1 we already established that Minato suffers from some kind of saviour complex. He sees outcasts and he is compelled to befriend them, to open up the locks they have inside their hearts. As Miki has shown though, he doesn’t do it for them, but for himself. He‘s an altruist to a fault, ignoring his feelings for the sake of others.
Minato has no ego, but all empathy. He feels emotions but doesn’t understand them.
Momoka is self-serving and selfish. She uses her acquaintances for her goals. She knows that her desires hurt others, but from her perspective it’s not her fault that others get hurt. „If everyone thinks about themselves, everyone is thought of“. She is a narcissist to a fault, sacrificing others feelings for her personal gain.
Momoka is all ego, but without any sympathy. She understands emotions, but doesn’t feel them.
And what I like about them is that they’re both empty. Minato was never hurt or in pain when he was broken up with, because he never felt anything for the girls. No ego, no feelings that could get hurt.
Momoka is empty because she doesn’t realize that getting what she wants will never satisfy her. And spoilers >!her finally realizing that having a boyfriend who doesn’t feel anything for her is the worst thing that could’ve happened!<
They both deserve each other because without being with their opposites, they would never really understand their flaws and change whole heartedly.
PS: Sakasama > Hanakage (fight me)