What would you do if you find out that your wife is talking to other guys behind your back and lies to you about it?

If it is behind your back, then y'all have serious problems. She should be able to talk to who see wants, but if she feel that she needs to hide or sneak around then that is a sign of a larger problem in y'alls relationship. Talk to her let her know that there is nothing wrong with having friends, but y'all need to fix the problem between y'all that would make her feel as though see needed to hide it. Good Luck!