Pranks tbh. Teasing. And crass jokes. And touching casually a lot and overstepping boundaries and doing "jkjk... unless..." jokey flirting. Doing ~platonic little games~ like sharing pocky sticks, Fleki's always been a very casual unbothered person with stuff like sharing water bottles and joking so even if it does always make Marcille overthink every little thing and "did she mean it that way??" She brushes it off even when Fleki gets more and more suggestive and intimate with her touches and jokes... Maybe she's even taken a liking to calling Marcille "like a nagging wife" because of all the worrying and chiding she does over her...

Until one day Fleki just unceremoniously blurts out if Marcille wants to date or tries kissing her and initiate a casual unlabeled intimate relationship (wether or not she just does it that way bc she's scared of asking for more or scared of commitment or thinks she's unlovable and too hard to live with so Marcille would end up leaving her anyways. Probably a little bit of all the above so in the end she just doesn't, it's overwhelming so much that it bypasses her mind fully and she avoids thinking about any of that and tries for the physical relationship instead, simple and easy, then Marcille after or during asks to talk about it- and she's like "teehee okayy if you want it soooo bad let's date...") and it's not the end of the bumps in the road of their romance but yay they like each other 💞 feels euphoric to both of them in the moment