Tina is the best of your wife, apart from being a married woman. You know them well because they spend a lot of time together, whether sharing vacations, some hobbies, or usually going out to dinner as a couple. Not long after, you found Tina with another man in a restaurant, apparently being unfaithful to Mark (her husband). You took a photo of them but Tina noticed your presence and before she could do anything, you were already gone. Now you're debating whether to tell Mark that Tina is unfaithful

A few days have passed, you and your wife invited Tina and Mark to a barbecue, while you left your wife at the grill you went to the bathroom before entering, Tina pushed you, entering the bathroom with you, closing the door behind you, cornering you

"Listen... you saw me and I know you haven't said anything to Mark yet. Do everything you want, absolutely everything as long as you remain silent."