1) I've always been concerned with that aspect of verbs like "snog" and "fuck" as well. Although even with the implication of it acting on another person, it's not implied one way or the other whether the person consents.
3) I think the problem Sor was talking about was that she fears giving friendship privileges to someone who's interested in her is inherently leading them on. That is, even if she's been clear about not being interested back, because the actions involved in the privileges can be read as suggesting interest, it creates a mixed message in that context. Or that showing her tits to someone who's interested in her might be cruel, in that taunting someone with something they can't have sort of way. I could be wrong, though.
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3) I think the problem Sor was talking about was that she fears giving friendship privileges to someone who's interested in her is inherently leading them on. That is, even if she's been clear about not being interested back, because the actions involved in the privileges can be read as suggesting interest, it creates a mixed message in that context. Or that showing her tits to someone who's interested in her might be cruel, in that taunting someone with something they can't have sort of way. I could be wrong, though.