Entrepreneur Thea Thorpe, 30, is tying the knot with Jack Logan-Beddings, 36, both from Nottingham, next summer after they used the site to cheat on their previous partners.
The pair met through Illicit Encounters.com, a dating website for married people, but both insist they have learned from their mistakes and they trust each other to stay faithful in the future.
Thea said: ‘Yes, we have both cheated in the past but this is a new start for both us. We both previously had a very liberal attitude towards monogamy.
‘We thought being in open relationships were the way to find happiness because life is too short to spend all your life with one partner.
‘But that all changed when I met Jack. I wanted to spend the rest of life with him and that meant ditching the extra-marital dating.’
I appreciate this is not your conventional love story but they do say that love finds a way – and it certainly has with Jack and I.’
Jack said: ‘If you had told me that I would meet the woman of my dreams on a cheating site, I never would have believed you.
But after my first date with Thea I knew that I never wanted to share her with anyone else. I wanted us both to build a future together as a normal man and wife.’
Thea and Jack first started dating a year ago when she was in a long-term relationship with her boyfriend and Jack was married to his first wife.
Thea said: ‘We were both in relationships where we had permission to cheat. I was dating several men on a casual basis and was using lots of dating sites.
‘A specialist extra-marital dating site suited me because the kind of people you meet are in open relationships, too.
‘It makes things less complicated and you can just concentrate on having some fun together.
‘I had several affairs in this way and thought that I was living the perfect life – with lots of sex but the stability of having a steady partner back at home.
‘For a long time I convinced myself that this is what I really wanted and that I was enjoying the best of both worlds.
‘I would get the giddy excitement you get when you meet a new partner and then, when it all went a bit stale after a few dates, I could just move on without any complications.
‘Then I met Jack and all that changed. He made me realise that my long-term relationship was a sham and that the flings I was having on the side were just that – meaningless flings.
‘With Jack, I had something much more meaningful and I knew I couldn’t handle the idea of him sleeping with another woman.
Like Thea, Jack had been unfaithful several times and he is still married to his first wife. He will only tie the knot with Thea when his divorce comes through.
He said: ‘I knew straight away with Thea that I was living a lie and that I had met my life partner.
‘Obviously it was slightly more complicated for me because I was married to my wife but we split shortly after that first date with Thea.
‘I had had other flings with women I had met on dating sites before I met Thea. It was fun at first but it does get a bit tiring moving from one relationship to the next when you are still married.
‘I didn’t really connect with anyone until I met Thea and then love hit me like a thunderbolt.’
Jack insists that he trusts Thea completely and they have been completely faithful since falling in love.
‘We cannot bear to be apart so I know where Thea is 24/7 – we have total trust and cannot wait to build a future together,’ he said.
Thea said: ‘Just because we have both cheated before doesn’t mean will do it again. It’s different with Jack.’
To ensure that they both don’t cheat in the future, they are working with relationship expert Louise Van Der Velde, who runs courses teaching couples how to have better relationships.