imitator copycat
A person who wants to be like you can be referred to as an admirer, a role model enthusiast, or a protege.
A stalker.
insatiable
germaphobe.
OCD
If a guy you like found out you like him and wants you to call him he probably wants to talk to you because he wants to talk to you about it, possibly wanting to ask you out.
An altruist
Smart.
Anywhere someone wants to make a call.
Aggressive. Pugilistic.
Ambitious or dissatisfied with their lot.
A moocher or a cheapskate.
Call the police. Don't attempt to talk them (or anybody else who wants to kill you, Bipolar or not) out of it. Call for help. Immediately.
someone who is just a taker, or never really wants to pay ect.