What are some good bible verses that will tel me why I feel like this?

I had feelings for a girl for a long time and dont know why. Everything happens for a reason, then why did I feel that way for 3 years for a girl I did not know and also as well we never knew each other. Hung out, had or even date. Why would this happen? How is this part of God's plan? Even when she told me she didn't have feelings for me I still couldnt move on after way it happened. These feelings werent coming from my heart either. It was more like in the pir of my chest. I know all this sounds kinda weird but what are some good verses in the Bible that will explain why I did feel that way for? What is God s purpose of all this?