Yeah, one of the early pieces of feedback from the (closed) beta testing was that the romances were too difficult, so the final game has a difficulty toggle, just like YAGS
There are a few opportunities for sex in ZAGS, but the intent was to convey that Carlos was mostly done trying to turn himself straight through sex with women, but he's still somewhat nervous about sex with men, and you get to help him through that
(Adam is not a route, but there *is* an Adam and Carlos CG in the final game... I'll let you discover what that means for yourself ;) )