Sandra Bullock, head over heels after her role in “Gravity”, has been obsessively “booty-calling” co-star George Clooney.

At least that’s what George wishes.

“She calls every night, 3 in the morning, drunk,” he jokes in the Dec. 6 issue of Entertainment Weekly magazine, which names her its Entertainer of the Year, and features the sexy 49-year-old actress aglow in stunning white.

Running with the gag, Bullock explains: “It’s a booty call. But then he wants the commitment and the marriage and I’m like, ‘Dude, I don’t have the time.’ ”

But asked about her love life — her real one — after a nasty breakup in 2009, Bullock punted, saying she’s focused on raising her adopted 3-year-old son.

“If something happens, great, but if not, I’ve got plenty to do,” she says.

That doesn’t necessarily mean more movies. “I really don’t need to act,” she admits.