will you remind your friend he or she owe you money?

China
August 22, 2012 5:06am CST
if your friends borrow your money and do not mention it in a long time ,like 20 days ,what will you react ,if it is not much ,will you just pretend you have forgotten and never mention it ,what do you think about that ,i think it is a little akward ,now three of my friends owe me ,i am not rich ,i need that too ,but i am a little worry that it may be akward to remind it ,what can i do?