I'm currently on my second stay in the US visiting my girlfriend, I've been to the US previous from June-Aug, and my current trip is from Nov-Feb. I've recently graduated from a tertiary education and I plan to take a gap year between 2012 March - 2013 March before going back for University.
My girlfriend is currently studying a broad in the US but shes not an American Citizen so theres no fear of us getting married. I do not plan to work in the US, I may do some volunteer work and such. I do plan to take a break and go back to Australia during September. I do have an excellent immigration record, I've always left on time and never overstayed. I just wanted to ask what would increase my chances for being approved for 6 months at a time?