Grace and Lena Dunham in 2010
04/09/2014 at 08:00 PM EDT
While accepting an award for her advocacy work with LGBTQ youth, Girls
star Lena Dunham
revealed why the cause hits so close to home.
"I have always felt a strong emotional connection to members of the LGBTQ community," Dunham, 27, told a packed house at the Point Foundation's New York Honors Gala on Monday, Vanity Fair reports
. "My sister Grace coming out as a gay woman at age 17 was a huge turning point for me in my understanding of the issues facing LGBTQ people."
Dunham said thankfully intolerance was never an issue in their community. "We were raised in an environment – the art world of downtown Manhattan – where no one hid their sexual orientation … I was always very jealous of any child who had two dads."
And that's not the only thing she envied.
"It was actually a huge disappointment for me, when I came of age and realized I was sexually attracted to men," she said. "So when my sister came out, I thought, 'Thank God, someone in this family can truly represent my passions and beliefs.' "
As for her current love life, Dunham is still happily dating guitarist Jack Antonoff
. Even though she joked with the crowd "Gay men clean up real good, which is probably why I have dated so many of you."