At my former highschool there was this sweet looking music teacher, she was like 23 or something

Actually last week I was in town getting a sandwich with a couple of friends and when I went paying for it I bumped into my teacher from when i was 6 or something, she recognized me and was asking how I was doing and stuff, it was totally weird cause it felt like she was hitting on me or something with the way she talked and looked at me.