Sex and love are two different things. You can love one person and have sex with another. If he loves you, he will want you to be happy and let you have sex with anyone. He will not restrict you to himself and not mind you having sex with someone else if it makes you feel good, mostly or maximum cases in which if he is not good at sex himself.

This is a statement that I find hard to disagree with. But I know it is wrong.

How would I disagree with this statement? How will be debate it in a way to correctly dethroned this mentality in a spontaneous , sharp articulate manner