@artikandri Oddly enough, I'm not. I feel like just looking at them I can almost see both those things happening. It's like "Yeah, that's how it would work with those two." I bet the split was fairly amicable--he just came to realize that he could enjoy her quirks best from a certain distance where he didn't have to be driven crazy, and that anyhow she didn't actually love him or anything, but they're still basically fond of each other.
@Purplelibraryguy I see your point I'm interested in their relationship mainly because of personal reasons though (kinda out of topic here. Makio 's personality is kinda like that of my best friend, so it would be interesting to see how the mangaka brought up such difficult personality in relationship). But of course, Makio's relationship with her niece will also make a good read