My wife has been coming home from work later than normal. She told me several weeks ago that an old HVAC repairman at her work had been flirting with her. She came home last week about 4 hours after her work closed and she wouldn't let me feel her pussy when I asked her was she cheating on me. Since then she won't have sex with me. I checked her panties the following week while she continued coming home late, and they had crusty white dried stains in the crotch of them. What should I do, stalk her and catch her or see what else happens. I'm almost certain that the AC repairman is the one doing her after hours. Below is a photo of my wife and what she looks like. Please let me know what I should do.