The pair have been spotted together several times this week, meeting up for a dinner with pals in Chicago on Tuesday and again for a birthday yachting trip with friends in New York on Thursday.
Even though the two have seen a lot of each other, a Kardashian source pours cold water on the idea the two stars are heating up.
"Kim is just friends with" West, says the source. "There is nothing going on romantically. Kanye and Kim are just friends and have been forever."
Kardashian turned up to support West, 33, at the premiere of his new film Runaway in Chicago. According to reports, the pair hung out at a private dinner afterward. Two days later, West returned the favor and was by Kardashian's side as she celebrated her 30th birthday with friends and family on a yacht in New York on Thursday.
"She thinks Kanye is a really cool guy," says the source, "but they're friends and only friends."