Whether that clip is fake or not brings up the following question....
Why does it have to take someone to buy cameras in order to break up with someone?
So one's gut feeling isn't enough?
Usually, people end up telling on themselves anyways and if someone feels that they can't trust someone, then that should be a cue to cut his/her losses and end the relationship.
In the clip, dude said that he isn't paying child support.
Well, is it his kid, he gonna do it or else get sanctioned! Also, even if he isn't the father and the mother has a shiesty ass lawyer who knows the legal game along with a judge who has a bias towards fathers, then his ass could still be legally responsible for that child.
Investing in spy equipment doesn't solve trust issues, but it may help bring closure and a peace of mind, so....