It stands for Old English.
I'm confused to what the question is?
Your answer should be WHO.
Think of it like this: You wouldn't say "The boy it (a variant of 'which')", because it simply just sounds odd. Instead, you're wired to think "The boy, he (an unknown name, so it would be 'who')".
Answer:
if you give love, and they don't give any in return, you're wasting your time on somebody that does not value you. you shouldn't chase people who turn their backs on you.
