<human>: Can you condense the text into a few key points?

So a couple of years ago I had some college classes with this cool chick. We did a lot of work together over the course of about a year and kind of had a connection, but I never did anything about it because I was kind of a pussy. I saw some of her posts recently on facebook and I was just wondering, would it be weird to message her? It has been about 3 years since we last talked. 

I know this question is kind of stupid, but I am just wondering basically if this would be weird and If I should just move on.
<bot>: Is it weird to message someone on facebook who you have not been in contact with for an extended period of time, provided there was mutual interest in the past?