But why do you feel you must know the truth?What's the point?All you are doing is making yourself crazy by seeking/finding the truth.

Ignorance is bliss,so why not just stop snooping and spying and save yourself all this anger and hurt?

Since you refuse to do anything about your situation maybe you need to work on acceptance,work on accepting him for who and how he is?That's about all you can do,you can vent until the end of time but it won't change a damn thing,will it?