I think he's still fucking the girls on a rotation, it just isn't interesting enough to show in the manga, unless they throw in some gimmick, like the brainwashing berserker state, or tossing his sister on it.
Take can go die, please? Hoped he was gone for good... :/ And really, is the author not gonna address how he just dumped Sakura for some other girl just as she started to be normal for him? Nothing?
Fuck it, I'm saying it. Sakura looked unreasonably hot in page 12, when she went "off the charts."
I wish I knew of some manga with characters that are designed like that by default.