I am sorry, understanding/sympathy/empathy only goes so far.
I understand being bored of living the same routine, but if you think and I quote the mofo here basically "my partner's thoughtful words are annoying me", then YOU are the fucking problem dude. Go get therapy if you think your love partner needs to be your personal entertainment box.
I really REALLY hoped the author would make a chapter where the MC rubs it into this pricks face that he is now happy with a good partner that actually loves him. I would have SO loved that.
Also: That douchebag does not deserve even one of those cute guys he bonked. Especially that red-haired beauty.
The Man Next Door