How cuckold fantasy saved my marriage [true] [husband perspective]

33 year old male here.

Context: married since i was 24 years old, in an EU country called Romania. I had met my wife at the age of 16, since then we were together.
Currently we have a kid.

Ok so since we were together for so many years, our sex life was not that "interesting" any more. She came to me, letting me know that she needs more from our sex life and if we can't solve it, we might need to split. As i was the kinkier one and done all sort of nasty thing with her, i was the one that needed to solve the "issue". But it was an issue as we had sex 1 per month and that was not something that brought us joy, it was made to be made (I'm sure some of you understand the situation).
I sad that i was the kinkier one, let me delight some of you with details. So at the age of 16, there was not to much to do as we ware exploring our bodies and we ware deeply emotional about every kiss ofc. When i turned 18, her gift to me was to let me cum all over her face. At my 19th birthday she offered me the gift of licking my ass, as she masturbated me. At the age of 20 she offered me to piss on her so that we can explore my(our) water sport fetish.
We did all sorts of intimit things between us 2 along the years. But here we are, age 30, married and in the brinks of colaps.
I had tryed all sorts of things, from role play to adding toys… It worked for 1 moth or 2, but we defaulted again into a non sex life.
That was when i had discovered cuckold/hotwife/share stories on literotica website. It was fascinating for me. I had spent hours and hours, masturbating to those stories. I was hooked.
Than one day, at a party, my wife was dressed as an angel. Mini dress, all revealing. All the boys were trying to "hit" on her. She was stunning and got a lot of attention. But for me something clicked, i was damn hard, horny as fuck. I could not control my urge to fuck her. Pulled her into the bathroom to fuck her, ofc she was eger for sex as well. But again, she was on the dance floor with her friends and again i was hard, even after bathroom sex (and ejaculation in her mouth).
What was going on with me? Usually at that point in time, we had sex 1/month, but i wanted her again after a couple of minutes… As i was at a party and did not brought any condoms with me, and the fact that i just ejaculated in her mouth, i could not have sex with her again, so i went to the bathroom to masturbate. So i did, but guess what, i came back, she was dancing with a guy, and i was hard again… How can that be? I whent again to masturbate… I did that process 3 more times as i was way to turned on.
In the following days, we had sex daily, hot pasional sex. But she was wandering herself why and how can this be possible, how can i be so willing and turned on. That was the moment when i had told her.
She could not understand why i was not jealous, how can i be turned on by that. But that was at the begging.
She slowly turned to be ok with my new fantasy, as we were having a lot of sex.
We made a plan, started slowly, creating a tumblr account, where i could share photos of her with other guys. So I did, that period was an amazing one, she was willing to pose for me, even daring me to ask the guys for specific poses, letting them decide how my wife will pose for them. Sex was amazing again, we really enjoyed it.
But again, after about 2 years, we lost the joy of sex again. It was time for us to make the fantasy a reality.
So we did. I had found an amazing man, kind and smart, very good with words, willing to come into our lives and have fun with us.
I had invited him into our apartment(he gained my trust on tumble, but i do not recomand for others to invite a "stranger" into their home directly) to have sex. My wife was shaking, she was so emotional that she was not able to speak ???? that was funny. It took us 2 hours to get things going. But he was amazing with my wife. As i had told him all the details about what she likes, he was ready to turn her world up side down. So he did. It was an amazing scene to watch. All the kissing (i really consider kissing to be a very intimate thing) to touching to words spoken, it was all a bliss. The image of his dick slamming into my wife pussy will remain with me forever. The most amazing part was when he asked me "do you want to take a picture for your tumblr profile?"… I know that it might be to much, but it happened, that was the moment when my wife had an orgasm, those words, and the fact that she was posing for me to post on tumblr got her off.
She got him off using her hands, i got off fucking her after the guy left.
That was the event that saved our marriage.
We had amazing sex afterwords, and for the last coupe of years (2 to be more precise) this is the fantasy/sex activity that gets us both turned on. Even if we just talk about, it will put us in a very horny state.

For us it worked, i hope for others will work as well.
Pffff it was a lot to "blow" off here.