Good thinkin, the girl can cook. I got peeved at one the other day that said 'darlin I burn toast'. I was all 'fuckin learn somethin, you work in an italian restaurant!' No experienc o successful fb-ing but framing it is everything. If in your situ I'd attempt something like

'You're really cute, I like you. We totally shouldn't commit to eachother though, the sex is awesome, AWESOME, but I want to stay available. How else are you going to find Mr Right?' Serious but teasing and playful.