After 2 years of college I've not been able to connect to

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After 2 years of college I've not been able to connect to any girl, since all I seem to get is either boring study types or just very plain uninteresting girls at my college or complete nutjobs hooked on drugs or dick.
These days I've begun thinking about my highschool days, and thinking about a specific girl I liked but was too edgy to act about it.
By the end of the last year of highschool we started getting closer. We would tease each other all the time, generally get along well, and she even said in a more subtle manner that she would like to hang out. She also asked me if I would like to parade with her in the closing ceremony.
Some of my friends were on to the whole thing and were mentioning that we got along. With the end of highschool we ended up having class albums and I gave mine to all my peers so they could write in it, and I decided to only read it with two of my best mates. She wrote in it and then she asked me to write back and I did, without knowing what she had written.
I later found out with my mates that she not only wrote some very kind words about me, she also requested my phone number.
Now the big question is this.
Should I try to contact her now? I've never spoken to her since we ended school. I fear that inviting her somewhere will either end up as a cute reunion with nothing happening afterwards or a desperate attempt to rekindle a relationship.