Originally Posted by
treznor
The fact that you don't have a job that ties you to your home country (if I read that correctly) is a pretty big negative. However, the fact that you are with your girlfriend, who does have a job that ties her to a country other than the US, is a positive. That you are 'visiting your US girlfriend' has been reported by some to be a red flag since the officers are worried you'll end up overstaying as a result. That you have onward travel is a pretty big positive, as is the ESTA waiver I would think.
Second this--two red flags, that's asking for trouble.