Doesn't Love Need Reason?

Someone tell me "love doesn't love if it only left one side feeling"
Someone tell me "love is harder once you loving for someone"
And again.. someone tell me love "will easier if you become a reason for someone to love"

I've been trying so hard to love somebody that I Loved.
I never stop to count how many good things he have

So..
Do you think Love need a reason?
or You will fall in love with lot reason?
or Until you never find a reason to love someone.