What does Damian exactly want with MC? It’s just like possessive dominance where he want...

What does Damian exactly want with MC? It’s just like possessive dominance where he wants her to be dependent of him no matter what path right? Like if she knew what he was involved with she’d cut him out of her life, be he doesn’t seem to really care…
So it’s not love, lust , or for power really so I guess I don’t get the reason he’s obsessed. Like just being by her side and being attentive would probably been enough for her to stay by his side… It seems like he’s ruining his relationship/chance with her ╮(￣▽￣)╭