Man, everyone painting the qunari as the only people in all of Thedas who restrict sex have clearly forgotten about the Chantry. Remember, Circle mages cannot have sex or family units either. We know from encountering them that there are deviants (Anders--remember his joke about how mages wear skirts for easy access when nobody's looking?--and that one runaway kid you find in the bar who says he's never even seen a naked woman) and that there are those who are content with this (Wynne, Irving).
But people keep equating sex with orientation. You can be a homosexual virgin, just like you can be a straight virgin. Your orientation has nothing to do with whether or not you have sex. You can view sex as utilitarian, a means to an end, and still have romantic inclinations toward the same sex, and not view those things as conflicting. If that is culturally how sex is viewed, it wouldn't be much of a stretch at all.
I'd just like to pop into this thread real quick and nip the idea that same sex relationships can't produce children right in the bud. Trans people exist. Sorry, but that was bothering me a lot.
From what I've read about the Qun in this thread, I'd have to come to the conclusion that homoROMANTIC relationships would be fine, but anything involving "doing the do" outside of what the priesthood allows would be dealt with accordingly.
That's another question, actually. Sten confronts a female Warden about taking on what is considered a male role in the qun. He says that the qun dictates that everyone remains within their assigned role, and not try to change it. This would imply that being trans would go against the qun. HOWEVER, we also know that the Tamassrans evaluate and assign the roles of children later in life, not at birth. What if trans individuals are recognized and assigned their role accordingly? We don't even know if they are assigned a gender at birth the way that we are. Maybe their gender, like their job, is assigned to them when they come of age.