He would confess

Nick would go to her and admit that, in a moment of weakness, he was unfaithful. She would be furious of course, and yell at him. Then, she would slowly strip, reminding him of how good he had it. He would admit that she was beautiful, and he was a fool. She would ask him what the woman he cheated on her with did, and then do those things. it would start slow, but soon they would be fucking wildly...

Fuck, the thought was making her horny. She had to either stop thinking about it, or find somewhere she could touch herself.