Lend only what you are prepared to lose.
Lend your money, and lose your friend together with your
money.
Keep the money, and lose only your friend.
Never be a guarantor for a loan too.
Unless you are a rich man and can afford to pay up your friend's
loan.
Your friend takes the money, default, and the bank comes after
you.
Bank won't chase your friend, because he simply cannot pay.
So they chase you, the guarantor.
Boh hua, your friend get the money, you get nothing but the lawyers
letter.
You chase your friend, your friend hates you. 
