I agree with Davy. It was used against my husband even though our wedding date was 42 days after the court date (and had been since before he filed). His ex had secretly gotten married several months before the court date (and kept it a secret from her
own children in order to keep him from finding out) just so her lawyer could point at him and say he was "
fornicating in the presence of the children". Never mind that the man she secretly married was the man she committed adultery with. We were the fornicators as of the court date. Most people would be shocked at the alternate reality that exists behind the closed doors of family court.
As far as how to fight the arguement - what's the argument? That you shouldn't have overnights because the GF is there? Do you have any overnights now? How old is your daughter? How old is your agreement? Not enough info to give solid advice.
BTW - I'm pretty sure there weren't any children present when the fornication was happening, lol. Just to be clear.
