Friends with benefits or no friends at all?

Is it okay to be friends with benefit's with someone😕👀 even tho they kinda got someone special in their life😔😶, does it make you stupid or whatever to be messing with them even tho that's what they want you and him to be❔❓❔ . should I still continue this or end it🙅📵❌🔜🔚 , what you think

(Please comment need help)