I posted the other day about my relationship with DP. We had become more like friends and I wasn't sure if I loved him, have been feeling this way for a while etc etc
Last night we finally had time to talk and (through many tears) we decided a break would be good. I would stay at my mums and he would stay at the house.
My DM already knew something was wrong so it wasn't a surprise for her.
So tonight I'm sitting with her and my step dad and whilst I'm mning/texting my best friend she keeps looking over my shoulder and asking me what I'm doing, who I'm talking to etc. Over and over. Eventually I ask her why she keeps asking and she basically said she suspects I'm having an affair
. She then pauses for a minute then and continues with 'mmmm well, it is typical of [mine/Dfathers surname]'s' (my DF had an affair 25 years ago when they were married, they got divorced, both remarried)
I got very upset and told her she was mean and asked her if she realise how nasty that was to say. The more I thought about it the more upset I got. All I needed was some support and an non-judgmental bed to sleep in.
I ended up gathering my things and storming out. I feel gutted, she has form for this and has thrown mistakes I've made back at me before but this really takes the biscuit.
I'm now on a bus back to mine and DPs house to sleep on the sofa. I feel so lonely and let down. 
Sorry this was so long and fir any ramblings I just needed to let it out.