I need advice

Well a few weeks ago I tried taking my life. I really tried, I even warned people the night before. So when i took the pills. My “friends” left my dying body there and kicked it. Then I got a text from someone I didn’t really talk to say words I never heard before. “Isaiah…I don’t want you to die. I care about you.” It meant SO much. Then while she kept texting me, I tried staying alive so hard. Talking to her. Feeling safe and cared for. The feeling I never had before… I slowly started to fall for her. Then one day these kids tried jumping me. They all had bats. I ran. Later on I told herand she was so scared and upset it seemed. She was saying how those kids are not good people. At all and she doesn’t like them. One day I was just longboarding, and I got a call from her and she was so scared for me. Saying one of the guys is right behind me. I felt something else then, I felt comfort and feel in love a little more. The beginning of this week I asked her to homecoming. She said yes! She does go to a different school, so I have to do all this paper work and get it approved by my school and her school. So then yesterday she started to date one of those guys. I was so down. Yet still taking her to homecoming I don’t know what to do. Or what else to say. It’s the very first girl I truly fell for! I never even dated anyone. But I want her. I really do. Help me.