A woman has her ''best sex ever'' with her husband's twin brother.

Bizarre on Female First

Bizarre on Female First

An anonymous woman confessed online that she had the ''best night'' with her husband's twin brother before they'd even met, and still keeps the secret in the hope he never finds out.

The unnamed user wrote on Whimn: ''At a friend's 30th I met a gorgeous guy, he was quite shy but we had a few laughs, a few drinks and ended back at my apartment. It was probably the best sex I'd ever had.''

Although the woman thought she'd never see the mystery man again, she soon bumped into him again, or so she thought.

She said: ''We arranged to meet for coffee and I couldn't believe he didn't seem to remember me. I'd had my hair cut and dyed so I thought that was why he didn't recognise me.

''I didn't give anything away though and, when I asked him about his family, I found out he had a twin brother. Then it all made sense - I'd slept with his brother.''