i had a one night stand but it was complicated

so i met this chick at the bar last week and we hit it off instantly. she was super cute and really funny. we went back to her place and yeah, you know what happened next. it felt amazing, like that moment where everything just feels right. but then she woke up early in the morning before me and left a note on my pillow saying how much fun she had but i shouldnt text her again. it was so sudden and unexpected, i mean i get its one night stands but i thought maybe there couldve been something more. ive been thinking about her all week, wondering if im just being silly or if shes really an asshole for leaving like that. also worried if she felt the same way at all or if she has a boyfriend or is just playing games. anyone else ever have this kind of thing happen? am i the asshole here or did i just get played? its been driving me crazy