During his much talked-about appearance on the ITV1 dating show earlier this month, Merry claimed to have dated the former glamour model, prompting a number of the female contestants to turn off their lights.
Having initially rubbished the suggestions on her Twitter page, the bodybuilder told ITV's This Morning that she and the model had only shared "one date".
Discussing news of Merry having received death threats, Marsh quipped: "One of them was from me!"
Explaining her history with him, she explained: "We had pictures in a nightclub, he sold the pictures to the TV show or whoever and gave them away. And now it's being told that we had a whole full-blown relationship and that I was his ex-girlfriend, this, that and the other."
Asked by host Eamonn Holmes if she had "snogged" the 27-year-old, Marsh said: "I kissed him on the lips - and that's it - we're married and having kids!
"So obviously I knew from that one date that he wasn't my ideal man let's say, and now I'm getting stick from this show and from people going, 'Oh my God, I can't believe you went out with that guy, he's so hideous'. I didn't go out with him!"
Ruth Langsford asked: "So you're not surprised they all switched their lights out?" to which Marsh said: "I'm not surprised at all!"
> 'Take Me Out' Jodie Marsh ex 'marries secret girlfriend'
Watch Damion Merry's Take Me Out appearance below: