i hooked up with my best friend

hey guys. i'm really confused and some advice would be great. i (21f) got with my long term best friend. we are the same age. it happend at the party, we were drunk and we ended up making out the whole night. he drunkenly told me that he fantasized about this a lot. then he invited me to his place and i really wanted to go but it was already like 3am and i was really tired and didn't want to ditch friends i came with. we ended up doing all that again a few more times lol. i dont know how to approach this because i know him and he's emotionally unavailable, he doesn't like relationships and always jumps from one relationship to another which is fine with me because i'm like that too and i'm not really seeking a relationship at all so we are on the same page about that. but we literally didn't talk about this AT ALL and just kept hanging out normally when we're sober. it's not uncomfortable or anything i just feel like someone needs to address the elephant in the room. honestly id like to be fwb and to see where this takes us but we didn't talk about it at all and i dont know how to address it or approach it lol. do i just say can we talk? and ask him directly? it would feel kinda stupid i dont know. so any advice would be appreciated, thanks :)