Kristen Stewart and Robert Pattinson apparently have the same guilty pleasure that a lot of us do.

We would basically die to get to hear Rob serenade us, but Kristen gets to experience this on a regular basis, as the two love singing karaoke together, according to The Sun.

In fact, they enjoy it so much that Rob just bought an expensive, state-of-the-art karaoke machine for Kristen as a gift! Talk about commitment.

"They both absolutely love karaoke," a source says. "They used to go to bars whenever they could, but more often than not they’d get hassled by people."

"So Rob surprised Kristen with their own machine," the source adds. "It’s top-of-the-range stuff with built in disco lights, a huge screen and even its own mini stage."

It sounds like Rob and Kristen love using it with their pals at all hours of the night.

“Now they have karaoke parties at their home in the Los Feliz neighborhood of Los Angeles with all their friends," the insider reveals. "They go on until the early hours – even after a night out they head back to Rob and Kristen’s for a good old late-night sing-along.” 

The only question remaining is: What is Rob's go-to karaoke tune?

"Rob always goes with Robbie Williams' song 'Angels,'" says the source. "Apparently, he’s brilliant at it. He used to sing it loads when he was growing up. He doesn’t even look at the words on the screen – he knows them off by heart." Too cute!

We're thinking that the couple that sings together, stays together.

Source: The Sun via Hollywood Life