Not keen on this, first the guy earns zero sympathy for his sob story. "Huhuh, I have a strong sex drive, so I'm gonna cheat on my girlfriend and cause her to frequently go get drunk and vent in a pub. Because I cherish her, of course."
He's an idiot and insensitive. Worthless as a boyfriend and as a friend. What exactly was the takeaway of this chapter ?
The worst part is that, with how Midori has been acting so far, it's very much on the table that the author wants this story to end up with a huge bait and say "he was actually a nice guy all along, so they got together again". If I wasn't dumb, I'd drop this until the rest of the chapters are released, and we know how it ends.