Find someone dating service
These sites typically have search tools that help you narrow down the type of person you are looking for.
Use these tools to search for a man with the same qualities as your husband.
If you find those, you have found your first clue that he might be participating in online dating.
(See References for link) In the tools options you will find a history tab, which when clicked will show the most recent sites accessed.
This will only work if you are able to do it without your husband knowing you are installing a program on his computer.
You can record keystrokes, emails and even chat history using one of these programs.
If you don’t have his password ask him why he has it blocked–either he will tell you the password or you will know he is hiding something.
Assuming you have his password, open his Internet browser.