I was the OW, and i was married too.
why did i do it ? well i am not a sociopath, and i do not have low self esteem.
at the time i also had no intention of falling in love or leaving my marriage.
I could be accused of being selfish in wanting this extra relationship but things really are not as black and white as it can seem on mn.
my dexh was in denial about his sexuality, he had solely decided to be celibrate about 5 yrs before.
he did not explain why to me, and i missed a sex life basically.
i tried talking, date night, asked him to go to counselling, asked him to see a doctor..everything mn will advice you to do . He wouldn't.
at the time i was higher earner and work took me away a lot and i worked weekends too...so he would have been seen as main carer for our two daughters, i did not want to leave as i knew that he would get resident parent status and i would pay him maintenance, all because over the years we ( he included) had encouraged me to work more and earn more and he in particular enjoyed the lifestyle this gave .
I am not justifying myself, just explaining how i came to be in the position..and honestly i was younger and felt somewhat justified in looking for some 'fun'.
i know a lot of cheaters have this mindset of ' well i deserve this' and now looking back, i think i felt like that. I did not really think about his wife , and i thought we would just have a bit of no strings attached fun and no harm done.
I cannot believe i was so naive now, though i do not know what else i could have done about mu domestic situation .
My dp and i did end up together, and we are very happy, it has been at some cost to other people without a doubt.
i am not smug..i do not feel i won...affairs are not always about sex .
in my case we met for one thing and it became something else, or we might lasted longer in our marriages if we had not met, but both agree we had exit plans for when children were older, so would have left at some point,
ours i guess was a classic exit affair.
for the OP: i am glad you have worked it out, i think it is normal to still think about the ow, and what she now thinks is an unknown, maybe she really fell in love with him and still thinks sadly about the fact he was married and stayed with you, maybe she has moved on, maybe she doesnt think about it at all.