Many of us are curious about open marriages - but would you take up an offer from a cheating partner?

An anonymous woman has sparked a heated online debate, having fessed up to a very messy six-month affair with her personal trainer. Before delving into her story, the '33-year-old woman' admitted she was a 'terrible and horrible person', but had some questions about polyamory she just needed to get off her chest.

Posting to Reddit, she claimed: "My husband is a wonderful and great guy, he's the love of my life. We've been married five years and we have two kids. My hubby was so supportive of me during my pregnancies and after our second boy he was very supportive and encouraging of me wanting to get my body back.

"At first I felt silly but after a few months I saw a lot of progress. Then I started feeling nice and almost sexy again. I'm usually awake at 4am and at the gym from 5 to 6:30 and work 7:30 to around 3:30 then work out again in the afternoon before going home to my boys."

One day around nine months ago, the woman said she met a man who would soon become her personal trainer. She signed up to his classes and worked out with him multiple times a week, but this soon progressed to something more.

"After a few more weeks we scheduled my sessions to be at the end of his day so we could go eat together afterwards," she explained. "Then one day I said my hair was a mess and I just wanted to shower, then he offered for me to shower at his place.

"That's the beginning of the end of my marriage, I know. But I don't regret it. I went over and got in his shower and while I was washing up he walked in and asked if he could join me.... Ever since then we'd go back to his place for more 'training' sessions. Ultimately it turned into a full blown affair."

Despite loving her husband, the woman added that he simply wasn't treating her in a way that's exciting. And now, she's wondering whether an open relationship would be better.

"I'm at such a loss," she admitted. "I want what I want but I want my husband too. I've considered telling my husband and asking him for an open relationship but I know if he said no I'd resent him. I just want to be happy."

The anonymous Reddit post was quick to rack up countless angered comments, with many stressing that 'you can't have your cake and eat it'. One person wrote: "Tell your husband the truth. He deserves to know what you are doing. Then he can decide where to go from there. Don't ask for an open relationship. It's what cheaters do so they have a clear conscience."

Another added: "No one here is going to validate you. Go be happy with your gym dude and if you love and respect your husband at all you’ll tell him the truth so he can divorce you."

What do you think? Let us know in the comment section below