You say you are not on the thread to discuss why you had the affair but in your posts you've said you have difficulty ending it. Therefore why you are having the affair is important. Your beliefs are what informs your actions and we are saying we think your beliefs are deluded.
You are deluded OP. I'm an impartial stranger on the internet so I'm objective as are most on this thread. You are not objective OP.
You've framed events to flatter your core belief that (I'm drawing this from what you've written) you two are 'special' irresistably attracted, star crossed lovers. You use words like 'passion' and 'addiction' as though these things are exceptional and others can't understand.
Forgive me if I splutter with laughter but come on OP. It's all so bloody textbook and corny. It's teenage.
You make all this excuses about external forces keeping you apart and his accident preventing the completion of his leaving his family. It wasnt external forces, come out of denial. If he wanted to be with yo, he would. It's that simple. You're not lovers cleaved in twain by cruelest fate you're just ordinary living an ordinary, predictable story.
Now why am I 'spouting all this venom', well before you trot out some waffle about jealousy or bitterness listen. I'm saying all this because this is what you need to start seeing and understanding in order to leave. To leave and stay gone you have to want to.
You have to know yourself and why you did this. You have to stop flattering yourself with the way you are painting and trying to present this. You have to move into reality. Yes, it will be painful but it's you who wants it to stop, so it's you who has to do the actual work and that starts with some self examination.
I would recommend some cognitive behavioural therapy because I don't think you are as self aware as you might be.
I will finish by saying how ridiculous some of the stuff you've written is, for example Alas, if she pays more attention to her career rather than her husband/family, affairs happen (i'm not condoning either of our behaviour but if an attraction is strong, its hard to ignore) and moreso, if she's never at home.
That made me piss myself laughing, it reminded me of every cheater ever that is caught on Gerry Springer etc shouting in defence you were never home, it's your fault I cheated Embarassing OP.
Also I don't believe he left the wife that time, I think he was kicked out and managed to worm his way back in.