Friends With Benefits 🙄

Hey! So I'm 17 but been really good friends with a guy for a while. He is good friends with my ex. But I broke up with him and done stuff with other guys since. The other day I was round at my friends house and he was v.flirty and we ended up kissing 😅 he said that he would be up for a FWB situation as long as no one found out, which I am chilled about, but just want some advice from other ladies out there who have had similar experiences and how it's turned out....in all the movies the guy + the girl fight and break the rules of becoming attached but then end up getting back together again! 🙄 X