Bit of a long post sorry as I have to give some background info.
6 years ago DH had an EA with a work colleague.I was completely devastated,never thought it would happen to me as I totally trusted him and believed that we had a very happy marriage and family life.
After several horrible months...he said that he had stopped all contact, then I found he had bought a new phone and was still contacting here, buying her presents etc.However we decided we would stay together and work to make it better, not least because despite this DH was a very good father and the DCs adored him.
When it happened, the first person I wanted to confide in and turn to for support was my BF.She and I had been friends since school, our children were similar ages and she had divorced her first husband when he had an affair.
But she totally let me down,she kept talking about divorce when my concern was to minimise any trauma for my children.She never rang or came to see me, even though we only live a few miles apart,she knew how devastated I was but provided absolutely no emotional or practical support .
I feel as though I have always been a true friend to her when she has needed it, and so her betrayal was almost as bad as DH
After this our friendship stopped,there was no big argument..I felt very bitter and despite really missing her and her children cannot find it in me to make contact .I do realise that this is my fault,but since my H affair, I have such low self esteem and am full of self loathing.
Anyway..thanks for reading this far, a few weeks ago, another friend who we were both at school with came home to visit her mother.I rarely see this friend in RL but keep in touch via email.She lives a long distance away.
We met up and had a lovely night together,it made me feel really happy,I have been diagnosed with depression and on medication since July ( god I sound like a complete misery don't I ! ) also I find it quite difficult to make friends ,and a bit emotionally shut off.I am very lonely.
During the evening friend mentioned that she was also meeting up with BF
She said that she knew we were not speaking as they are both on FB.
I said it was very sad,but did not go in to any details and certainly did not say anything disloyal about BF.Friend does not know about DH.
After the evening I txt friend to say thanks for lovely evening, and have since sent a few txts but not had any replies.
Today is exBF birthday so I went on her FB 
I sometimes do this via my DD page as I miss her.On there was a message from friend,thanking her for a wonderful time and saying that we should all meet up next year for our birthdays,with a comment that made it obvious that they had been talking about me.
I realise that I probably sound quite deranged in this post ! But I felt really hurt that they had both been discussing me,when I had the good manners not to d o this too my BF. Feel v.sad that friend has contacted her not me also.
Thank you very much anyone that reads this and replies x