Credit: Splash News

Macaulay Culkin's new pal is Rated XXX!

The former child star wasn't alone when he checked out Baghad, a "live sex club" in Barcelona, Spain recently. Pics reveal that Culkin, fresh off his split from Mila Kunis, visited the club with Irene Lopez, a Spanish porn star.

Speaking out for the first time, Lopez tells E! News she and the former child star have hung out before.

"The last time I was with him, no one found out about it," she says, "I don't know what happened this time that the newspaper heard about it."

PHOTOS: Hollywood's oddest couples

After eight years of dating, Home Alone star Culkin, 30, and actress Kunis, 27, confirmed their "amicable" split earlier this month. A source told Us Weekly that the duo parted ways several months ago, but kept things quiet as Kunis promoted Black Swan.

And Lopez told E! she is mindful of her new pal's recent split. "If there is a possibility that he goes back with Mila, I don't want to be an obstacle," she says. "The breakup is really fresh."

The X-rated actress declined to dish on her relationship with Culkin -- or what they did, exactly, at the live sex club. "I don't want to cause him any harm. He's a good person."