My Fiancé Ended Things I think.

Over the last 5 months my fiancé has let a person back into her life, that has tried ruining our relationship 2 times. I was ok with it because I thought people could change. Well me and my fiancé have been going through tough times. We have a daughter and we both just started working again. So arguments have been happening quite often. We both knew it was just an argument and we’d be fine. Well about 2 weeks ago this friend stayed at our house over night and my fiancé had to work the next day. Normally she leaves when my fiancé leaves. Well I woke up and was confused why she was here but didn’t think anything of it. I made small talk and tried to entertain her like any good host would. When she left I was relieved personally I don’t like her. The next day I woke up to my fiancé beating on my chest asking “how could you do this to me” I was generally confused. Turns out her “friend” told her I came onto her and was trying to cheat on her. I did no such thing and proved it the best I could well I thought everything was fine after that. But this weekend something changed. She was ignoring me and act very cold to me. Her father had noticed I was upset by this and asked me what was wrong. I spilt my guts out crying. He knew I would never do such a thing and confronted her and she started acting all lovely doves until we left then told me it was all an act to make her dad happy. She will not let me so much as be in the same room. I’ve cried myself to sleep for to nights now because I’m hurting so much. I have no where to stay but here. I lost my friends because of time. I no longer talk to my family because of drama from awhile ago. I took all the photos of us together down cause I can’t stand looking at them when she is doing this to me