Friendship betrayal

Im so fucking done with friendships- Why does this shit ALWAYS happen to me??? I was in this trio and a girl (lets call her L) fell in love with the other friend (we're gonna call her AJ). L, in a mental breakdown, told Aj she loved her (more like L forced ME to tell Aj).When Aj told her didnt feel the same, L said she was going to k!ll herself. I had to stop L from doing it and the two haven't really been speaking this year. L was super depressed and i was still friends with both,but kinda more on AJ's side. These past couple of months me and L got closer but she also started to hang out with AJ more which shocked me ngl. 

This week i felt as if she was icing me out, distancing herself and so I asked if we could have a private conversation about it. We talked and stuff and I got very personal and emotional-I was very vulnerable with her because i felt like i could trust her.

She pulled out her phone in the middleof the convo and saw she was voicerecording it, I asked about it and she gave me some bullshit about how her phone sometimes just does that, thankfully I made her delete the recording. 

I saw her texing Aj and tricked her into giving me her phone if i gave her mine. She quickly unadded AJ from her snapchat but i found AJ again, added her back and was still able to read the messages between the two and I felt like shit.


The two were mocking me,laughing at me like they've done before- L was telling me one thing but telling AJ another. L wanted to humiliate me, make me to be some sort of joke. ME. THE ONE WHO WAS THERE FOR HER WHEN NO ONE ELSE FUCKING WAS. AJ kept talking shit about L, didnt even want to hear a mere mention of L's name and suddenly the two are buddy buddy again. Lis such a twofaced bitch and i told her that to her face before I left and blocked the two on everything.

The only thing i'm actually worried about is that I wont be able to dance during prom, after I worked so hard to learn most dances (since I was supposed to go with AJ).

I dont even know what to do. I just want friends, and I thought L and AJ were mine. Im so embarrased and hurt by their actions- 

I just wanted to vent, if you can, can you guys give me some advice on how to move forward?