Laugh a little
There is a difference
Ruben goes to see Rabbi Bloom. "Rabbi," he asks, "is it true that Jewish husbands can sleep with their wives on fast days?"
"Yes, Ruben," replies Rabbi Bloom, "that's correct."
"So does it follow," continues Ruben, "that a Jewish husband can also sleep with someone else's wife on fast days?"
"No, that is not correct," replies Rabbi Bloom.
"Why is that?" asks Ruben.
"Because the Torah clearly states that during fast days, we are not allowed to have any pleasure," replies Rabbi Bloom.
"Yes, Ruben," replies Rabbi Bloom, "that's correct."
"So does it follow," continues Ruben, "that a Jewish husband can also sleep with someone else's wife on fast days?"
"No, that is not correct," replies Rabbi Bloom.
"Why is that?" asks Ruben.
"Because the Torah clearly states that during fast days, we are not allowed to have any pleasure," replies Rabbi Bloom.