nevermind/
are you obliged to lend him money?
Is there an adult relative or friend whom you trust and confide in? Perhaps he/she can better understand your situation and guide you along or you could try to seek help from those family welfare centres, usually located in neighbourhoods.
If you feel you need someone to confide in, there are volunteers there to help you, give you advice.
eg: care corner http://www.carecorner.org.sg/
Physical violence cannot be tolerated, a police report is neccessary. You can make a difference in your life by seeking appropriate help.
All the best!!!