RandB star CASSIE is baffled by the internet stories that circulate about her - because she has never been pregnant and even her closest friends don't know about her dating life.

The sexy singer, who has been romantically linked to Sean `Diddy' Combs for months, is keen to find out who the sources tipping off bloggers and gossips about her are - because the stories are all high fiction.

Cassie tells Complex magazine, "I've been pregnant three times by way of bloggers. I've never been pregnant in my life.

"(And) anything that happens in my personal life is personal. I never actually put anything out there. Nobody's really known who I've dated."

But she insists she and Diddy aren't an item, despite reports to the contrary: "I'm not in a relationship right now, but I'm 22. I'm dating people."