I don't feel bad anymore

I used to feel bad when i did "sexual things" with i guy i didn't like,and now i feel fine.
Today a guy that likes me came over,his name is Adrian.We hung out at my friend sergio's house and his mother wasn't home,Adrian and i went to Sergio's room to talk about something i wanted to tell him.we,he starts holding me on sergio's bed and i hold him,we start playing around it ends with my pants off and my little sister walking in.I usually feel bad,but i don't.It happend exactly how a imagined (except for little sister walking in)....it was cute and i dint even fancy the guy.it was his first sexual act with a girl,he will remember me for the rest of his life.