The narrative (in the opinion of 60%-70% ‘I can't do it’) of the path of evil with Astarion as the tragedy of abuse and being stuck in trauma, he's losing himself, where Tav is the victim, not as freedom, independence, love and consent to an eternal bond... only 10% of AA fans agree with the leading narrative from the reddit community.
I don't see why this narrative should link up in such a simple thing as kissing,
which has always implied harmony and pleasure.