I Need Adivce About A Friend?

Long story, but here it goes (please ignore my spelling my keyboard is wacko).
I meet her in 6th grade, and in 7th i moved in next to her. she’s very insecure, and has issues with people leaving her. we became best friends, and trusted her with everything. Soon, she told the guy i liked that i liked him. I gotmad at her and she said that she would never do i again. well, she told him more. She cannot control her mouth. Well, she likes attention. She is blonde, but very book smart. i she does something stupid that gets attention, she will go even further to stay noticed. Well,i was liking this guy, and she texted him. She said that she only said hi, but when i talked t him he said that she said that i was obbsessed with him (which i wasn’t). We fought again. Well, a month later i liked another guy and she told him right in front of me. We fought again.I cannot trust her, and i moved a half mile away the next year. if i hang out with other friends, she gets mad. She is very protective. She’s fun to hang with,but i don’t want to be “best” friends with her (shedoesn’t get that). Her life is really tough right now, and i want to still be there for her. Any advice?