Please be kind, this is my first post. Just having a really rubbish day.
Well actually its been a horrible year with bereavements, and then DH and I splitting 5 months ago after 15 years of marriage (no kids - we can't have them). Both of us late 30's/ early 40's.
Ex-H to be is a good man but we've lost the spark, and although he called it a day, and has really taken the brunt/wrath of family and friends, I think its probably the right thing to do. We don't make each other happy, and I suppose life is too short. There is definitely no one else involved.
So the house has been sold, and we've walked away amicably with 50/50. Divorce is ongoing.
I've taken up new hobbies, and made efforts reconnecting with friends, etc, and in that respect it's been positive for me. I'm fully independent, good job, etc.
Problem is, shortly after we split, I got in touch with an old friend, and long story short we have started dating......And I really really like him. The sex is amazing, and he just makes me feel happy. This is probably highlighted because the last year of our marriage was stale, and negative, and more or less sex-less.
So a couple of days ago, my STBEXH asked me if I was seeing someone else. I told him I was, and he said that he was honestly really happy for me, he just suspected and wanted to know.
I had started to tell close friends and family, about the new guy, although I stressed it was casual.....
Anyway, so I was supposed to be seeing new guy tonight, and I was really excited...but he's cancelled - unwell apparently...but I feel in my gut that he is withdrawing, and I dunno, I just feel really upset and a bit foolish 
Firstly, I feel sad for STBEXH, and secondly, for me
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I don't know what I'm asking, just some encouraging stories or advice.