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.

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“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.