How to Hack a Password for Mozilla Thunderbird Email Account

Hello everyone,

My name is Jasmine. I recently found out my boyfriend for 20+ years having a relationship with a lady at work. I cried and begged him to come back, but it looks like I'm losing the battle. We still live together. I noticed that he recently added a password to his Mozilla Thunderbird email account. I know his hiding something. Is there any ways to hack Mozilla Thunderbird email account? How about password for Adobe Pro9? Any help will be greatly appreciated. I'm completely new to hacking. Thanks