Still holding on...

Harp
Hello ladies, 
So I was at a festival yesterday and I saw my long time crush and best friend. We haven't spoken for almost 2 years because we decided to go out seperate ways since he didn't want to be with me. He's a great guy. I've known him for 6 years. We were never together but we both had an attraction towards each other. Now since I've seen him , I can't stop thinking about him. Should I send him a text or just leave it alone?