The 30-year-old has recently been spotted out with US rapper West, 33, but while she remained coy about their romance, her sister Khloe, 26, had a lot to say about it.
Speaking at the People's Choice Awards on Wednesday, Kim told US entertainment show Extra: 'I think I've just been having a lot of fun.'
Khloe added: 'That's because they're boning!'
Kim replied: 'That came out of Khloe's mouth, not mine!'
The Keeping Up with the Kardashians star sparked controversy last year when she took a photo with teen popstar Justin Bieber - and now she's sympathising with Selena Gomez, who received death threats from fans after being romantically linked to him.
Kim said: 'I definitely hope that these kids just kind of tone it down.'