My ex dropped my daughter back home tonight and asked why I was keeping secrets from him and her about someone I'm seeing?

His story;
She told him mummy loves someone and we are all going to spend christmas together and shes been told all of this is a secret.

Daughters story (she is 6)
She told me she did say that but that it was a dream she thought was real but now she knows it's not true and it was in fact a dream.
She's known to tell some tall tales.

Ex also mentioned my brother? Said hes been telling everyone about a guy I'm seeing. NONE OF THIS IS TRUE. my brother knows nothing and anything...

Anyway WTF!!

daughter burst into tears as she didn't get to say goodbye to daddy and that I shut him out

He scared me so much was right in my face pointing and shouting.

I don't know what to do