Grizkey
Romances about hetero couples can either be PG, PG-13 or NC-17.
Romances about same sex couples always jump right to NC-17, cause there is no middle ground. No one wants to read about non-taboo, non-explicit, happy homosexual couples. That's what hetero literature is for!
((Excuse me if I sound tetchy. I've just noticed this in gay lit- if it's written specifically for gay audiences, it's usually, about 90% of the time, really explicit. I think this happens because of something on the publishers' end, not necessarily on the writers'. Maybe it's driven by a hope for high sales by shocking audiences? Forbidden sex sells?))
((I think the issue is, a lot of people in the US automatically associate "homosexual" with various sex acts. For example, when children's anime gets sent to the US, pretty much all gay relationships, be they implied or established, get censored out because of that. Sailor Moon, anyone? Kind of why it's hard for people to publish books with homosexuals without going to extremes. Homosexuals in young adult literature, even when they don't do anything, is controversial anyway, maybe they figure they might as well go further.))