It doesn't matter really, you don't have to classify yourself any which way. I identify as a lesbian because I prefer women over men, but I have had sex with men... My girlfriend of 6 years does not identify as a lesbian, having spent most of her life in heterosexual relationships and being a mother. We fell in love because of factors beyond mere gender. Don't worry about labeling yourself, it's a waste of time and effort. Enjoy the time you have to experiment and find out who you are. Just do so safely!