George Clooney and Rihanna spill all their dirty little secrets in a game of "Never Have I Ever" with Ellen DeGeneres -- and their answers will definitely surprise you!

The actor and the pop star don't hold back when they're asked about skinny dipping, getting drunk before noon and if they've hooked up with someone over 50 (none of them have!).

The "Hail, Caesar!" star quickly admits that he has "hooked up with someone in the back of a car," but RiRi needs some clarification.

The "Diamonds" singer wants to know if Ellen means "making out" or "sealing the envelope." You'll have to check out the clip to find out if she owns up to either one!

Next up, Rihanna comes clean about "seeing a rapper naked" and George says he has "forgotten the name of the person he was fooling around with."

But what about texting nude selfies? Only the Grammy-winner has done that.

Later in the show, Ellen grills both of his guests on their love lives.

After the comedienne confronts the actor for not inviting her to his wedding to Amal, he opens up about the proposal.

"I plotted the whole thing out. I had the ring hidden behind her. I had music playing—my Aunt Rosemary's gonna sing 'Why Shouldn't I?' Everything was planned out and I've cooked dinner," he recalls. "And she comes in and she's just come back from London. Usually she'll dress up, and now she's like, 'Maybe we'll just order in. And I go, 'No, no, no. I've made dinner.' I've got it all set up, timed out, and the song is coming and she gets up to go wash the dishes—which she's never done. And I'm like, 'What are you doing?' And she comes back in. Finally I blew out the candle and I said, 'I think the lighter's in the box behind you.' And she reaches around and she pulls out the box and I've got just the ring sitting in there and she pulls it out and she looks at it and she's like, 'It's a ring.'" Like somebody had left it there some other time! I don't know. I'm doing all the moves you can do with my face."

"I got down on my knee and said, 'I couldn't imagine spending the rest of my life without you.' And she kept looking at the ring and she was looking at me and she was like, 'Oh, my God,'" he continues. "And we now know because there was a playlist, so we know how long it actually took, and it was like 25 minutes. Finally I literally said, 'Look, I hope the answers yes, but I need an answer I'm 52 and I could throw out my hip pretty soon.' And she said, 'Oh, yes.'"

Watch the video to find out how George knew Amal was The One.

While Clooney is still enjoying marital bliss, it seems Rihanna is loving the single life.

"It's not that I'm like, 'Oh, pro single! Yes! I hate men.' I just think that I just have so much on my plate that I can't even find the time to entertain a steady relationship or anything serious, or even a text," she tells Ellen. "Right now it's just crazy."

Check out the clip to see how she reacts to those Drake dating rumors!

Hot Videos