When Lady Gaga first told a gay magazine she was bisexual at the end of 2008, she was still a rising star. "Just Dance" had just begun switching over from gay club anthem to mainstream radio hit, and sure, she could probably benefit from using her sexuality as a point of interest about her.
Since the original statement, she's been back and forth on the statement. In December 2008, she told Popeater: "I'm really free-spirited about love and sexuality, which I think is apparent in my music, and even the visuals, which are all very androgynous" but that she didn't want to label herself."
Then in February 2009, she kissed a female cop in her music video for "Love Game" and shortly after, "Poker Face" became a huge hit, featuring lyrics about women like "bluffing with my muffin" and switching between pronouns from he to she.