advice needed quickly

ok iv been attractd to chicks for quite some time im only 17 an have been in 1 relationship that ended on good terms jus she travels alot so it came to hard to continue that relationship. a week ago i met up with a male mate of mine hes 19 an iv none him for a month, we went to the beach and he told me he likes me in a closer way. i think hes a terrific bloke better then our aussy males, the thing is im attracted to chicks about 80% then males but i know my parents will never wana know me if i told them im into chicks, so i feel like i should be dating guys to make my family happy , but i keep thinking y am i trying to make my family happy and not me but if i was to lose my family id never be happy because we are soo close. i told this guy i need time to think about it cause i no that everytime i c a chick i like, ill wont them everytime over this guy. but this guy like really digs me and hes really charming and sweet. wat do i do, say yes to this guy and c wat happens or just tell him no. advice needed very quickly thanks heaps guys =)