Two faced friends!

I recently went through the two worst experiences in my life which was miscarriages at 6 weeks I was staying with my friend her boyfriend and his mate, I've got a boyfriend like but her boyfriend mate was there for me which then I started to like a little I then stayed for a night and the next day he took me out somewhere and she got jealous the reason he did is because she pregnant and she constantly goes on about it so then long story cut short she fell out with me causing a lot of trouble and got two other mates involved for no reason which one of them said to my boyfriend I'm cheating when I never done but it all blew up and she getting to two other girls to blag about her being so happy about being pregnant,
I don't know what to do about it? It depressing I do miss her as a friend but she poison and I can do a lot better