How can I confirm my suspicions about my guy when I'm not home?

Question

Reason being he is very clever with his words and very clever on how to extend a fictitious event. I've seen him in action he can make something so believe able when its so unreal just like lide dee lotee dah e even extend the truth to his son via email I don't know if this is an addiction or ---shh ht

Answer 1

Put up a camera somewhere and record to see if he is cheating.