Why is my Ex bf playing games??help?

[Aliciahi5]

-we dated for 2 years, both are 22 years old. He dumped me cuz he lied alot and said he lost feelings for me..

-i deleted him off my facebook 3 months ago, and on christmas he re adds me and says merry xmas and he put 5 kisses after that, wth?

-he made his best friend message me and he was asking me about what im up to.

-Whenever i like a post on fb then he likes it too after me.

-and he has been calling me on private every now and then.

why is he doing these things? this is very confusing..help!
@robertray, i obviously accepted his friends request cuz i do think about him sometimes..But when i responded to the merry xmas message, i wrote thanks and he didnt reply to that, so im afraid i might come across as annoying