facebook nerds , i need your help :)?

[Kira]

i have two pages at facebook , one of them is for humor and the other is political , they are unrelated at all and no one knows that i own those two pages, but i liked them and they exist in my likes list.
anyway , yesterday i was surprised that a guy have liked the two pages at the same time , so i've gone to his page and i've found that he have liked all the same pages that i liked , all of them in the same order , he even liked the same books that i liked(read).
he has joined facebook two months ago ..
his actions look suspicous for me , what do you think that he is planning to do? do you think that he is planning to hack my facebook account?
what should i do ? should i ban him?
also, he has 13 friends all of them are girls.
sorry for the bad english