I'm just going on a wild guess by saying that ML is a total red flag who probably couldn't...

I think he wants MC back, that's why he is doing these things. And there also seems to ne a huge misunderstanding and something MC is hiding

Isn't it always just a misunderstanding that could easily have being resolved through proper communication and mutual respect?

Yea, but that doesn’t make a story. ┑(￣o ￣)┍

I know alot where it isn't required for the plot but I get it