If you happened to engage in activity that ran counter to your sexual identity, then you had two options: you were lying to yourself and everyone else, or you were just experimenting.
It was 2006, a full five years before Lady Gaga would set the Born This Way argument atop its unassailable cultural perch, but even then the popular understanding of orientation was that it was something you were born with, something you couldn’t change.
You so obviously cannot be gay, was her implication, because this is good sex. It wasn’t a command - it was a challenge.