Wife cheated on me with young neighbor

My wife and I are 38 and have two kids. I recently got a promotion at work and work very long hours. She works part time as a nurse and is home far more often than me. Our sex life has very much dwindled down to my job and the kids. I know she wants it more than I can give her so we scheduled a vacation at the end of the month to get away and hopefully have a lot of sex.

But I guess she couldn’t wait. We have new neighbors who moved in recently. They are in their 50s and have a college aged son who is 19. I never talked to him all that much. Tall skinny kid. So anyway I came home from work early on Monday because I felt like shit. I called her phone but she didn’t pick up so I figured she was working out or something. The kids are both in school all day now so she has the house to herself for several hours. I got home and could hear music playing in the basement. I figured she was working out downstairs. I go down to tell her I’m home and I when I look around the corner into the basement I see her and the 19 year old both butt naked and he is on top of her pounding her pussy hard and fast. They are facing away from me so I see her legs spread wide open for him and his ass and cock thrusting in and out of her wet pussy. She is moaning like crazy and he is just drilling her. He is really hung and pretty thick too and she is just taking it like a slut. I watch for a few mins and then leave when they switch positions. He doesn’t leave for like an hour and then I went back to the house and decided to confront her.

She was upset but didn’t deny anything I saw and told me they had been fucking for the past month.