Last night I kept receiving a security verification notice when I was trying to share a...

Last night I kept receiving a security verification notice when I was trying to share a couple posts. This was quite concerning to me after reading why you would do such a block stating I was doing something wrong and maybe I didn't know it was wrong, etc.. I then realized that a man that I am involved in some legal issues with - all the photos that he tagged me in that I could see on the left side of my wall were gone as well as all the Instant Messages that went back and forth between us for quite some time were also missing? Can you enlighten me why this happened and how I get those IM's back as they contain information concerning our legal issues? Why would he be able to get my account disabled like that? He is playing games and this is quite concerning to me that he could achieve this. His name is George Firis. I had accessed his Facebook information previously after he provided his passwords to me to notify people of his whereabouts, etc., I did not hack his account in any way shape or form as like I said he provided the passwords to me and I have not accessed his account in quite some time already.*Thank you for your quick response to this matter. You can reach me at ***-***-**** as well.