Husband's behavior is confusing

[pearlharbr]

Don't feel bad about spying. Someone is attacking your M and you have a right to know what is going on. If your H will not be honest with you then you have to resort to other methods.

A keylogger is good so you have hard copies of communication that can prove H is having an affair. It may be important in D and/or custody negotiations. If the computer is marital property then it should be ok to install the keylogger. Ask your attorney. If you don't have one, get one now. Having a consultation doesn't mean you have to move forward with anything and it's important to know what your rights are under the law in your state.

I used eBlaster, it was the best $100 I ever spent.

And I totally agree with Greek's advice.