Hey I’m a 17 year old in high school and I am very desperate for a girlfriend. It’s gotten to the point where any girl that even smiles at me I think they have a crush on me. And I recognize that that’s not how it is and probably isn’t true in hindsight but I want it to be true so badly. I have multiple crushes at the moment and I haven’t had an actual conversation with any of them. How do I stop doing this? And I know that this probably makes me sound pathetic but I don’t really care I just want to be better and have a healthy relationship with the opposite sex.
I have an example of what I mean.

This girl has made a couple comments towards me in a nice way and that made me develop a crush on her and then a couple days later I had given her a card that I had written for her that had a positive message on it saying “Hey I really like your wholesome attitude and I like how you make the class fun” because she was stressed out in math and she was generally really nice. I also wanted her to like me really badly. Lately I’ve been trying to text her over instagram and she hasn’t really responded.