Hi May.
It sounds very similar to the way I felt.
When I described it below I talked about it as though it was the greatest love on earth.
Well, it felt that way.
But having taken myself to bits since it happened, I have started to realise that it was not love. Or rather - it was love, yes, but it was not love for him. It was love that I felt in me and for someone he represented.
This is the crucial difference.
I am not sure how this applies, or does not apply, in other 'loves' as in a happily married couple, where there is love but not thhe all consuming pain that you and I (and your other man) have suffered.
It is presumably very easy to confuse the two - I don't think I have ever loved someone else, really, so I've nothing to compare it with.
There was not much trust with my 'partner' and I did not entirely respect him for much of the relationship - the truth was I was using him to play out something in my heart/mind, something I had never had.
With me it was the same feeling of someone accepting me, sex or no sex (and we did have sex, but not for 6 months) and it was completely compelling and made me very high. I was just coming through anorexia and this lifted me into health again - physically at least. It replaced it as my addiction I suppose.
I had been damaged by having a withdrawn mother, who never bonded with me as a baby and whom I felt never liked me; she also was jealous when I spent time with my own father, as she seeme to need him all to herself.
So I transposed this into being quite arrogant in my view that the married man did not 'belong' to his wife, he could choose whom he wanted to be with, and if that was me I supported that.
I was naive and stupid. I was so in need of someone to accept me that I got really acrried away with it, and it didn't matter if he treated me like crap, or if he didn't truly love me. I imagined he did and that was enough.
I strongly suspect it was a similar need in him, which he was using me to fulfill - but I wasn't the person he thought I was. it was in his head as much as it was in mine.
Remembering and understanding this has brought me a lot of peace in the last few years. In the sense that I own my feelings - the 'love' I thought it was, was really grief, for my own mother's love and acceptance - which was why it bloody hurt for four years and beyond, rather than being 'happy' like most loves - the 'impossibility ' of it was all part of the game. It had to be out of reach so I could grieve through it. iyswim...
I think perhaps your story is similar. I think you are grieving and that is Ok, just grieve, with or without him. I think though that he is grieving too for something, and if you tried to make a go of it it would NOT last as you're both projecting what you;re grieving for, that intense love, onto the other, and it isn't really about the real people you are underneath.
Anna is right - you change, you might need to accept bravely a new love, and move on, but in this case I think it is not a case of that. I think it is personal grief and hurt you are finally allowed to feel with someone similarly hurt, and it can be gone through like therapy can be gone through.
Let him go if he must, and carry your grief - he won't take it away for you. You must go through it to be a more complete person. We all carry childhood feelings over to an extent till we are old enough to face them
Good luck pet xx