u/Berry-Aromatic

I 16M started talking to a girl 15 F who sat next to me and eventually we started talking. As we talked for a couple months, I had pessimistic thoughts about my self worth and couldnt work up the courage to ask to hangout nor could I go up to her in person in front of her friends, even though we talked in person when we sat by each other. Eventually my negative thoughts led to a fallout between us and we now only snap eachother. I really miss talking to her and I still have a huge crush on her even though we haven't talked in months. How can I start talking to her again and try to pursue an actual relationship this time?