A black man moved in next to my house. He seemed very friendly, so I invited him over to help with my English studies. A few days later, I noticed a big change in my interactions with my wife; her intimacy with me was not the same as before, and I didn't know how to ask her about it.
What I didn't expect was that instead of learning English, my wife and he were secretly having an affair behind my back. I realized this only much later, but by then it was too late.
