I was driving past my brother’s house and decided to drop in, but at the entrance I saw my wife’s car: I slowly walked to the window to understand what they were doing there—and I was horrified

I was driving past my brother’s house and decided to drop in, but at the entrance I saw my wife’s car: I slowly walked to the window to understand what they were doing there—and I was horrified. 

I was heading home after a long day at work when I noticed a familiar house—my brother’s. We hadn’t seen each other for a long time, and since it was on my way, I thought: why not stop by, chat a bit, have a coffee like in the old days.