Take it from me - 99% of the time "spoilers" are wrong and written by people who either don't understand Japanese or are trolling. I remember being angry at someone spoiling Kin na Kanojo, Gin na Kanojo and it turned out he didn't understand the context of raws or dialogues.
Jeeze, everyone's overreacting. This is obviously a minor conflict which will get solved in another chapter or two. If I've seen it once, I've seen it a thousand times.
No, he wouldn't be happier with Kaoru. She - and this is very important - is not a big-titted, dick-obsessed pervert. He is living the dream and knows it.
The spoiler from chapter 28 is not true, I just bought chapters 28-29 and nothing of the sort happens, so be at easy.
In chapter 35 they are about to do it in her room, she even takes off her top but just when he is trying to undo her bra, her mother gets home, and at the end nothing happens.
If you've the choice between
A) an 8-10/10 that'll only put out occasionally and only if you behave yourself
or
B) a 4-7/10 that'll choke down dick any time the wind changes
you damn well pick B. EVERY. TIME.
Doesn't matter how pretty she is if you end up so sex starved you find your virginity again...