um. as a dream bad guy, i'm gonna say fuck iiiiit there's probably a chance that whoever is not going to end up evil and destroying planet systems and everyone needs to not be super weird about it. i mean, i know i am pretty relaxed when it comes to the whole murder and morally gray shit, but people probably shouldn't automatically be treated like they are going to murder everyone suddenly because that's just dumb.
so basically, just tell people to get over it, but i guess not in those exact words. also my parents are terrible at romantic things, so i'm biased about going to your parents for advice about this stuff. they want me to marry rich, stuffy people who talk about rich, stuffy things
also this is obviously not hypothetical and you are terrible at hypothetical
at least that's how i'd handle it if it were me. but also because i am really bad at letting other people dictate what i do.
but i mean, if he starts killing people, maybe don't do the thing. or maybe do. but you don't seem like you'd be super into that sort of thing, so probably don't.