Paris Hilton denies ex is with Lohan

Paris Hilton has rubbished reports Lindsay Lohan dated her ex, Stavros Niarchos.Paris insists the rumours were false because there is no way her ex would dream of romancing Lohan.She told Style magazine: "That was crap. She's never even hung out with Stavros. He thinks she's pathetic."Hilton, 25, recently revealed she is happy to be single at the moment because she finds having a boyfriend too tiring.Paris said she has no intention of hooking up with anyone because she wants to focus on her fledgling music and acting careers.She said: "It's really exhausting being a girlfriend. I'm always putting all my energy into some guy and I'm bored with it."