It’s probably sex videos of your wife. Accept the request, if he sends the videos, confront with your wife.
Disadvantage: You can’t do shit, even if those are sex videos because you are already married.
Advantage: You will gain an upper hand and pious husband card in your marriage after you forgive your wife.
Also later in life if u want you can visit prostitutes guilt free, if you get caught, tell your wife you can’t get those images out of your mind.
Modern problems require modern solutions