I feel embarrassed as I watch my wife walk away from me, in another man's arms

I feel embarrassed as I watch my wife walk away from me, in another man's arms. Not because everyone sees her going into his car, ready for their date. No, what's making me blush is the huge boner I have in my pants. Knowing that he's going to fuck her tonight has me so turned on that I have to cross my legs and hope that nobody sees how hard its making me to think about what they will be doing tonight at his house, while I'm left alone.

I feel embarrassed as I watch my wife