Someone you used to be friends with long ago messages you on facebook and asks for your number, what do you do?

Depends on how I feel in that moment. Sometimes I am impulsive, sometimes I am indifferent. If I am impulsive I will respond and if I am indifferent, RIP that potential friendship.

Accept a friend request on Facebook for now and see how it goes. I'd be suspicious giving my number out straight away.

Assuming we didn't end on like really bad terms, YOLO. It could be the new beginning of a beautiful friendship.

Give them my number I guess. Would be nice to connect with an old friend

i go to sleep