Andy Roddick and Maria Sharapova have been dating for over a year, US Weekly magazine reported.

Roddick, 23, and Sharapova, 19, have tried to keep their relationship quiet because of Sharapova's age, the magazine reported, citing unnamed friends of the couple.

The couple recently went public with the relationship, the magazine reported, as they were "beside each other all night" at the Zinc Lounge in Manhattan Beach, Calif., recently.

Speculation started when Sharapova spent time watching Roddick play poker in a casino at the Australian Open in January.

Sharapova left an IMG player party early to watch Roddick play poker in a casino's exclusive gambling rooms, Fox Sports reported, citing the Herald-Sun of Melbourne.

Sharapova also saw him play cards on Saturday and Wednesday nights, leading to more speculation that the couple is more than just friends, Fox Sports reported.

Not sure why this suprises me so much, but it does. I'm a fan of Andy's never have been a fan of Maria's.