Matthew Perry once made out with Valerie Bertinelli while her then-husband, the late Eddie Van Halen, was passed out drunk a few feet away.

The Friends alum recounts what he says are the details of that bold night in his forthcoming memoir, Friends, Lovers, and the Big Terrible Thing (out Nov. 1), revealing that he harbored an unrequited crush on his former costar at the time. Before his star-making turn on Friends, Perry starred opposite Bertinelli in the short-lived 1990 sitcom Sydney, centered on a young woman (Bertinelli) trying to make it as a private detective in Los Angeles.