Is it usual for one direction to follow you on Twitter?

By the way, before I start I like them but not "AHHHHHHHHHHHHHHHHHHHHHHHHH"

Ok, so because I was super bored I made a twitter and decided to follow all the one direction people and Harry and Louis followed me back, do they follow everyone back or just pick randoms?
Update: I just want to know XD
Update 2: HAHAHAHAHAHAHA for a follow?
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