Is it betrayal for my wife to go ballroom dancing behind my back?

Of course it belongs to betrayal! My wife used to go dancing in front of the park! She has a date! Later, I went to the park gate where my wife danced! After searching for a long time, I saw my wife and a tall and burly middle-aged man dancing in the back corner! That man is dancing with my wife's ass! My wife went to take a shower when she came back in the evening. As soon as she took off her skirt, her underwear was gone, and I don't know if she was wearing it! Still being shackled! Later, I went there several times. It turns out that every time that man sends my wife back, he has to make out in the corridor for a while! My wife also helps him manage! Then that man always wipes his chicken with my wife's underwear!