I have read this with much interest as it could, bar the detail, be me! When I met 'him' almost 5 years ago he was living apart from his wife = fact. I, at the time, didn't want a full-on BF so the arrangement (long distance) suited us both. However, as often happens in these situations, after a while I did become emotionally attached......cue status quo being irretrievably damaged!
About 6 months ago I found incriminating evidence of his situation having changed (pics in public domain of him wearing wedding ring etc!). When challenged, he refused to be drawn over the phone, said there was a long, complicated explanation which I would get the next time we saw each other. Upshot is he had moved back into the family home for the sake of the DS who was having 'difficulties' with exams....the son got 5 A+ this summer and is heading for a career in medicine (hopefully). He can't/won't commit to me because he wants to invest his energies in his son! Who is now 16 FFS, is well balanced and adjusted with a wide circle of friends. Of course, he and the wife were leading separate lives, different bedrooms, no sex......yeah right!
The wife had been painted (to me) as a malicious bitch, who had used their DS as a weapon against him and he was desperate not to lose the DS so moved back (supposedly at her request), and now he's using their son as an excuse not to commit further to me!!
I see him now as a lying, cheating, narcissistic coward who would never have revealed his true colours, had I not turned detective when red flags started waving furiously in my face. I feel hurt, used and stupid.
Like previous posters have said, wake up and smell the coffee love, I have wasted 5 years of my life on this bastard by choosing to ignore advice from friends and family. It's hard to admit you were wrong but believe me, you are the OW. I didn't, and still don't feel like I was the OW, I was deceived too, at least I know and can get on with my life, and truly feel sorry for is wife, who clearly thinks he's a reformed character (I don't know the reasons for their original split, having only been drip fed over the years, but suspect it was his infidelity with someone else, before me).
MOVE ON, deep down, you know it makes sense. There is no future with this man.
Sorry...that was long....didn't mean to hijack 