I got a man to cheat on his wife just to see if I could
Why did you want to make a man cheat on his wife?
To see if I could tempt him to do it.
It's immoral to try to get a man to cheat on his wife. If you know someone is married then you shouldn't try to get involved with them, because that's disrespectful to their spouse.
It shouldn't be that hard for a man to say no.
There's a myriad of reasons as to why someone would cheat, maybe he was just weak in the moment. Either way, your scheme was apprehensible and you shouldn't turn people against each other like that.