a) We've been friends for a long time but have nothing in common anymore
b) We just never connected? Either you never/hardly commented or vice-versa. I'm not one to demand or ask for comments every week, but if I honestly can't remember the last time we ever said something to each other, that's saying something.
c) You haven't updated in months.
Comments are screened if you had anything to say or think that we should give it another go~.