Virginity

I just turned 16 and have left school, i came out to friends in school months prior however i seemed to be the only gay as i was never asked out therefore i never got to experience a proper relationship. However, last week someone messaged me on snapchat asking to hang out, i said yes reluctantly as I didn’t know this person very well from School. Long story short, we ended up having sex. After, i felt like i had started a relationship with someone I didn’t know. messaged him saying how I wasn’t keen on a relationship yet and he said neither was he and that he just wanted a “fuck buddy”. I like the idea of being sexually explorative with him but what do i do when he starts to expect more from our ‘friendship’Btw- im uk so 16 is the legal age of consent