Singer Rihanna finds Rapper Kanye West's behavior of stalking her creepy. Says the source, "Kanye is virtually stalking his old protege Rihanna. It's creeping her out."

Adds the source, "He's been texting, calling and even showing up to her house or parties, hoping to find her so they can hang out."

"Besides being highly inappropriate to his wife, it's bizarre behavior because he's making himself look lame and kind of desperate.

"But Kanye's got very few friends in his life right now and is desperate to build back his inner circle. In his head, if he can get RiRi back on board, the rest of his old friends and opportunities will follow," concluded the source.

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