My Ex-boyfriend knew my Facebook password and email password, we were together for 9 years. He posted a status on my page saying #karmasabitch and #cheating bastard. He then locked out my account so I could not delete it. He also posted on a comment my new boyfriend made about having someone who cares, he wrote "don't be too happy, I was living with my boyfriend when I meet you, I will cheat on you too, you deserve better". My new boyfriend confronted him saying "that you are posing as my Mary, Facebook has been contacted, if you post any more bad stuff about Mary further legal action will be taking." He then sent me the passwords to my account, I quickly changed everything, he didn't apologize but explained that he was hurt. My boyfriend then received a letter in the mail which talked about all the relationship issues and things I did wrong, like not paying attention to him, not making him a priority etc. The letter was written as if I had wrote it to my new boyfriend, it was signed Karama and my name following in parentheses. Is there any legal action I can take? Can he get in trouble for this?