Had an extension visa

I am filipino visited hongkong on dec.4,2015 came from macAu my case was ..i stayed in hongkong from dec.4,2015 to dec.18 2015, which is 14 days total i was there to visit and stayed with a boyfriend. i tried to exit shenzhen but the travel agency cant let you apply entry permit if you are alone it should be a GROUP TOUR then but since i dont know anybody there except i didnt get a chance to go shenzen then the travel agency suggested me to go back macau instead to be an overstay. in the next day i also thought to go an embassy to ask an extension. but i really dont know what do in short i listened to a travel agent me to go back macau. but all of the sudden, they wont let me enter macau since i'd stay there for one month and macau IO sent me back to hk and when i got there they hold me in for an interview abd asking why i didnt get out the country before or the day of my last entry permit then later on they decided to gave me 7 days extension type from dec.4 to 18. plus 7 days one was valid until dec.25,2015 and i got a chance to fly back to my country on dec.24,2015. and now me and my bf talking about me to go back hk to visit him again some friends told me i could not enter hk after 6 months (sad). my questions are how true is that? Should i go back hk after 3 months or 6 months? Sighhhhhh or shall i need to apply 2 to 3 months one? I hops your response and THANK U IN ADVANCE.