[Steve Dallas]

Use a strong password using capital letters, lower case letters, numbers and special characters.

Also change your information such as the question (mothers maiden name), favorite color. When you change the password, is there another e-mail address attached to the hotmail account...and is that account hacked (meaning, he might have access to that account as well.

Lastly, you may need to do a scan with a good antivirus/malware program because it's also possible you have a keylogger or something monitoring any other computer you're using that could log into hotmail.