Many True Blood fans were shocked when actress Anna Paquin, who is engaged to costar Stephen Moyer, declared that she is bisexual in a public service announcement for the “Give a Damn” campaign earlier this year. Yet the actress said she’d never hidden anything.

“It wasn't like it was a big secret. It was just a cause I cared about and privately supported but not one that I had ever had an opportunity to speak out about in a way that would be useful,” she told Zap2it’s Dish Rag.

Though she said she doesn’t like to discuss her personal life, she felt the “Give a Damn” campaign was a worthy cause.

“Obviously, as someone who identifies as bisexual, those are issues I really care about – and frankly, I don’t see why everyone doesn’t care about them,” she said. “When I was asked to participate in that PSA, it was just an obvious, 'Well, of course I will.’” (People)

Read 7 Summer TV Shows Betty Can’t Wait For!