Mrs. Foreman and Rebecca's husband

The peephole allowed someone to look into the bathroom. I saw Mrs. Foreman and a man, who looked to be Rebecca's husband, kissing and running their hands over each other. I watched as Mrs. Foreman knelt down on the floor and started giving him a blowjob.

I could barely hear, but some words did come through. "Laura, we must be quick before Rebecca suspects."

"Then let's get clean and dirty," she said, after he came in her mouth. Grinning wickedly, he dragged his mother-in-law into the shower and pulled the shower curtain closed. The sound of the shower masked most of the sound, but I could hear some moans from Mrs. Foreman as he was undoubtedly fucking her.

I had a choice to make. Should I stay here or should I go tell Rebecca that her husband was cheating on her with her mom?