The 35-year-old frontman earlier vowed to remain celibate for two years. Although that deadline expired six months ago, Cuomo still doesn't expect to jump back in the sack anytime soon.
"It's been two and a-half years now, actually," Cuomo tells Blender magazine in its new issue, on newsstands Tuesday. "The vow is over, but I wanted to keep cruising."
Though he's a lead singer for a popular rock band, the bespectacled Cuomo says it's not difficult to manage restraint.
"Abstinence doesn't require as much self-discipline anymore," he says. "We never had any serious groupies, anyway. Our generation got screwed."
Cuomo's vow makes Weezer's 2005 music video for "Beverly Hills" somewhat unusual; it was filmed at the Playboy mansion with dozens of Playboy models and Weezer fans.
Earlier this year, Weezer released their fifth album, "Make Believe."
Cuomo is also pursuing a degree in English literature from Harvard University, for which he has one semester left.