Disinterest doesn't get you anywhere.
7th grade: Word got out that I liked this girl. She avoided me for the remainder of the school year, then I had to move.
8th grade: Successfully asked a girl to a dance... On the last day of school. Don't think I ever saw her after that.
9th grade: Got to know this girl, we chatted mostly online. Went to a dance, then she started avoiding me in the middle of it, saying I wasn't who she thought I'd be. Now I avoid getting to know people online and talk face-to-face.
11th grade: Got to know a girl, went with her to junior prom. I think there was mutual interest at some point, but she lost it after some time. We never really got anywhere.
Second year in college now. There's a girl in the same cluster that I'm interested in, but we don't really have much chance to talk at all. I think at some point a 7th grader asked me to a dance, but I turned her down, being 3 years older and already infatuated with somebody else.