As you said, it could be a game, but with this person, it's also possible that it's them being thoughtless instead of malicious, so for the moment I'm leaving space for that possibility.
Assuming it's the person who made the "kiss attack", that's crossed my mind already.
If they're confused (and possibly a little crazy) but not malevolent, the moves are completely different. You initially treat it as a misunderstanding, and the strongest criticisms early on are things like "it makes me uncomfortable when you do X".
This has no effect on a narcissist OFC (they see it as weakness), but it can open a door with e.g. someone who's "non-ASD ND".
How so, if you wanted to say? (It's fine if you don't want to say more too.)
I don't mind making suggestions, but there's no simple answer for an outsider (i.e. me) because I have
too little information.
The soft opening above is an example of a possible approach in the right situation. And BTW starting soft is rarely a mistake either way. It's
much easier to escalate at need than to de-escalate after a mistake.
One (of many possible) different scenario:
A narc is different. You find out what they want, and deny it to them. As politely and non-confrontationally
as possible, but you can't negotiate with a narc. You talk to them
only to control the situation, which generally means preparing your means your responses for
after you deny them something they want.
You can appeal to the better nature of people who are avoidant, have conflicting goals, and/or are mildly crazy.
But narcs don't have one, so there can be no real discussion with them.