My wife went out with her girlfreind to celebrate her birthday, I wouldn't usually follow her but that night, she went out in a dress that made her look like she wanted to be blacked by 6 hung men and left sobbing on the road side. 

 She was wearing a tight black dress, barely covering her fat perky tits, no bra on, or nipple tape, her dress was barely covering her ass if she bent over or sat down, and it was so tight, you could see the outline of her little baby g string she was wearing under it. 

Few hours go by and I go to the bar she is at, and I sit in the corner with a good view of her and her friend, they have 5 older men around them, they are centre of attention, which was no surprised as they were dressed like prostitutes.

 Her freind goes to the toilet leaving my wife surrounded by 5 55+ men, they buy her a drink, 1 guy is much closer to her than the rest, his hand on her waist, slowly moving to the small of her back. One of his gets the drink on the bar, and I see him behind to quickly poor some wide power into her drink while hiding behind 2 others, my wife would have seen if it wasn't for a well timed ass grab, prompting my wife to turn to the guy smiling. He hands her the drink and the guy who poured the powder in has a little laugh with his other freinds and gives the guy my wife is talking to, a nod and smile.  

The guy grabbing my wife gets her dress upto her ass inch by inch with every touch, almost like he is trying to parade her to his freinds as his personal fucktoy. I text my wife to see how her night is going, she looks at her phone and puts it away in her purse. 

Before her friend comes back, the other 4 guys leave, pushing past my wife, each one getting a grope of her, and the guy she is talking too pulls her hand to follow his freinds out, my wife tries to decline. The guy moves closer, grabs money from his pocket, then grabs her fat ass, and slowly moves his hands upto her fat tits, sliding notes down her tits, as he does it, he pulls the dress dorward so he can see down it enough for her errect nipples to be on full display. 

My wifes demeanor changes, she goes from defensive to open minded, her eyes turned from "no" to "where too daddy". He guides her out the club, leaving her friend, I was so confused at this point, what did they give her? how much was it? why is she doing this?

 He followed his friends to a hotel room, it took me a few minutes to find which room as i didn't want to get spotted, but when I did, I wish I didn't. 

The music was turned up loud, I could hear what sounded like a party, guys cheering and laughing, worst of all, under the music I could hear a head board going fast, grunting, moaning. I knocked on the door pretending it was my room, just so I could see inside. 

A young posh looking guy to the door, shirt off, sweating, phone in his hand in camera mode, the music was so loud when he opened the door I could barely hear him, I made some poor excuse on why I was there but really, I saw enough... over his shoulder I could see my wifes black dress on the floor, and further back I could see an ass in the air, baby blue g string covering nothing and her tattoo on the back, her arched back suggested she had a cock in her mouth. As he began to close the door for privacy, I saw the old guy walk past the door, still fully dressed and a camera in his hand and a roll of money.

What do you think I did next?