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

It was about four years ago when I first met Gary in college sophomore year. We became pretty close through our study groups, and a few meals together at a dining hall since we both lived in the same dorm. We clicked so well I still remember most of the conversations I had with Gary during our very first meal together. We talked about music, what we wanted to actually study but couldn't, and such. 

We also used to watch movies together at a dorm with our classmates. I really liked him. I liked how he cared about me, helped me with studying, exploring different genre of music, supporting on random things which I hardly ever saw from anybody else. 

And then one day He told me that he had a big crush on me. I just laughed it off, and never talked to him again ever after. I did not trust in my feelings, I was thinking that I was too naive and young to be in a relationship. Most importantly, I was Way too shy. 

Now, I really miss him because of those genuine feelings I received from him, but then I am scared of reaching out to him (we are still friends on a social media) because It's been too long since I stopped talking to him, and I don't know how those four years have changes us and whether we could be compatible to each other or not.
<bot>: haven't talked to a friend that I developed feelings for over years/ need advices on what I should do. Contact or no, if yes, what should I tell him?