Why won’t she oblige to rekindled friendship?

Me and my ex friend haven’t spoken in 13 years.
History is - we both always struggled with with getting male attention. One night she met a guy and hooked up with him. We all went back to my house after the club to continue the party and she left the room and I hooked up with him. So what? He preferred me and he was in my bed. She kind of phased me out after that. I didn’t care so I deleted her off Facebook, and I was left with no friends as she was my only friend.

I contacted her 13 years on asking for us to be best friends.

She hasn’t responded, which I think is super petty. Why do people behave like that? What the F is her problem.

Why won’t she oblige to rekindled friendship?
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