Why did he unfriend me on FB for no reason?!!!!! (please answer)?

[DoubtBox]

well,there is this guy from my college ,same year but different class,but we both know each other well because we have mutual friends though we never spoke to each other personally.....he sent me a friend request yesterday and i accepted it....then he started the conversation first and started chatting with me for quite 2 hours,he was really into the conversation and it seemed he enjoyed chatting with me,he also used a lot of smileys and it looked like he was flirting,and i was playing the same way,i wasn't boring or anything,we both really enjoyed it,then we said goodbyes to each other.
And then today when i checked FB he unfriend me...but what's the reason,that was pointless,why would he do that?...please help me!!!
don't freak out guys,i just asked it again to get more appropriate answers and did u answer answer it earlier to say that?!

[Misc Tech Advice]

How many times are you going to ask this?
Obviously must have not been that into you.

[Alex]

Facebook is just old, get an instagram or twitter. People have face books but rarely get on them anymore.

[Katie Mona]

Maybe he as an over protective girlfriend or crush on his page?

[Kendyall]

He probably has a girlfriend and she went on his FB and started snooping around.

[Notel]

Because you're creepily obsessive.

[Abu Ali]

I think you shouldn't give a damn about him, there are thousands of guys better than him.

[me]

it's the 2nd time you asked this question. I think you said something wrong

[Jane Doe]

U should not give that much damn

[Cynthia]

Since all of us here are strangers, the only person you should ask is this guy since he's the only one who knows why he unfriended you.