My first time

My first time was with a high school friend, we were 15. Sometimes I would give him some hand jobs and he would press me hard against the Booty with clothes on until it ended, my friend had it very big like 16 cm. But one time we were both in a bed at a plaza of cucharita, I was half asleep and suddenly I feel him start to masturbate and then he starts pressing his tip against my anus, I wake up well and pretend to be sleeping, afterwards he touches the Booty and listens as he puts saliva on his fingers, he lowers my short and puts it in, first only the tip goes in, and I tell him what he's doing, he grabs me and puts me face down with the Booty well lifted and covers my mouth, he gets on top of me and puts it all in at once, I start to moan nicely and he says what a tasty ass, it's very narrow he takes it out, puts it back in whole and I feel his big balls hitting against my tiny ass, then he gives me a slap on the butt and tells me I'm his slut and a minute later - I was moaning like his slut- he finishes inside and takes it out and I feel his cum coming out of my anus. After that I gave him a blow job in the school bathroom and nothing else happened.