https://www.wired.com/story/richard-stallman-and-the-fall-of...
Threatening to kill yourself if someone won't go out with you is terrible behavior at a bunch of levels: https://medium.com/@selamie/remove-richard-stallman-appendix... (search for "When I was a teen freshman").
It's clear that Stallman was not just "trying to joke around and be charming".
Even if that were his actual intent, acceptable intent does not justify bad behavior.