Well that's true it could be a long and arduous process against a high-HP class like a fighter.  But I wanted the physically tough classes to last longer.  And there's no rule that says a sexual encounter<em>has</em>to last until someone is comatose.  I think that's an important fact we're missing here that the rule is there but that doesn't mean characters can't pursue a one-orgasm quickie or just fuck their partner to 0 lust points at which point people who aren't a sadist would probably stop anyway.<br/><br/>You raise an interesting point though.  Let's start thinking about some rituals or enchantments that could make sexual encounters run to exhaustion faster if that's desired.