I rode a bus to friend's house because he's holding his bday party later on in the day, met his sister and we talked all day, at night I told her I'd want to date her but not yet since she'd need to move on from her ex, later that evening she chose to sit beside me and we had a conversation I screwed it up a bit though when we had nothing more to talk about I joked saying she was boring and how I wanted to sleep, she didn't want me to but later on I left to try to sleep, couldn't so I went back down and told em I'd go for a walk by myself, when I came back she joked how she thought I got lost and I said "maybe next time" in a serious voice coz I was sobering up and felt akward. Few days past and I message her and try to tease her a bit but she just ends up being cold with short answers.

Edit: I was teasing her through so she might have gotten annoyed or smthn

Tldr: hung out with my friend's sister for the whole day, she recently broke up with her ex, we had a lot of fun the whole night but she is not being cold towards me through text