Should I just leave her alone??

[Bob]

We go to different high schools, but were going to colleges in the same town next year. Her older sister went to my school but I didn't know her that well. I really like her younger sister but have never met her (were same age). I work in a college cafeteria of the college shes going to next year. I also see her all over social media. What should I do??? This drives me crazy.

[KJNL]

Ask her out. If she says no, then yes you should leave her alone. At least try before you give up!