Actor Ian Somerhalder told Andy Cohen all about his first time, and the role his older brother played, who taught him about sex.

The V Wars star opened up to Cohen about losing his virginity at 13 years old, “to an older girl,” on SiriusXM’s Radio Andy Wednesday.

“It was fun! When you’re 13 and you’re a boy or a girl, boys are pretty on it.”

According to The New York Post: After revealing the girl who took his v-card was 16 years old, Ian admitted he learned to woo women from spying on his big bro. “I had an older brother — my brother was seven years older than me, so he taught me a lot — and he was quite a Casanova … He used to have girls in his bedroom all the time, and what I did was, I went into the bottom corner of his window and I pinched the Venetian blinds. I pinched the blinds down so I’d have a clear view.”

Watch the interview below.