Maria Sharapova 2005 Telecom Italia Master in Italy Foro Italico / Rome, Italy. Photo Credit: Graffiti Press / PR Photos

London, August 21 (ANI): Singer Adam Levine has revealed the intimate secrets of his romantic alliance with Maria Sharapova, calling the tennis ace a “terrible lover.”

The Maroon 5 frontman divulged that the Russian Wimbledon champ’s refusal to move or moan during sex was the reason behind the collapse of their courtship.

"She wouldn’t make any noise during sex. I can't tell you how disappointed I was. I really thought, like a lot of guys, that she'd be the loud screaming type,” The Sun quoted Levine, as saying.

"But instead, she just lay there like a dead frog. She even got angry if I started to moan, said it 'ruined her concentration,’ he added.

Adam Levine NBC's Today Show - Toyota Concert Series - Maroon 5 Performs Live In Concert The Today Show / New York, NY 8/18/2007. Photo Credit: Janet Mayer / PR Photos

Levine said sexual disillusionment made him resort to anxiety disorder drug.

"It was so disillusioning that I went on (anxiety disorder drug) Paxil for a month afterwards. Really, it was much more of a shock than when I found out there's no such thing as the Easter Bunny,” he said.

The pair dated briefly in 2005, after meeting at Sharapova’s 18th birthday party.