How did my psycho ex found my profile on Facebook?

[Fifo]

Guys! I am so shocked, how is it even possible ? Lets say my name is Amanda. So I put my first name as Amanda and last name I put three ranfom letters like Rfg. We dont have any friends in common, so no one could tell him my name on Facebook and he doesnt know my email. So how did he know ? I even changed cities because he is a complete psycho. Did he search for me just put in search name amanda but i guess there are thousands of amanda on facebook, so he recognized me by pic ??
Please help how do I secure my profile from him and his messages and multiple profiles

[J10Dingo]

Block him, simple as that.

[Arron]

He could have used your email to find you, he could have even used some of the things you like to find you. But just block him if you haven't and if he makes another account, block the new one when he starts going on your profile.. You can tell when he goes on by using that one Facebook app " see who goes on your profile" kind of one.. And I hope that helps

[Geo]

blocking is the only option.

given below is from fb help pages.
Can I know who’s viewing my timeline or how often it’s being viewed?

No, Facebook does not provide a functionality that enables you to track who is viewing your timeline, or parts of your timeline, such as your photos. Third party applications also cannot provide this functionality. Applications that claim to give you this ability will be removed from Facebook for violating policy. You can report applications that provide untrustworthy experiences.

[Amanda K]

Are you sure you don't have any friends in common.
If he has an account his friends can become your mutual friends.
Yes if you used your pic..there's a good chance he saw it