Socialite Paris Hilton has been bombarding her ex-boyfriend with phone calls.

Hilton is said to be distraught over reports Doug Reinhardt - whom she dated for 14 months until April - is dating Miss USA Rima Fakih and is now determined to win him back.

“Paris is furious. She was absolutely freaking out at the Cannes Film Festival when she heard Doug was talking to Rima. She’s been constantly contacting him and wants him back!”

However, The Hills star is said to be shunning his 29-year-old former lover’s calls because he is not interested in getting back with her.

“Her mom Kathy has been consoling her. Doug is just over it,” the source added.

Despite her actions, Paris recently claimed she loves being single and is “too busy” to embark on another relationship: “I love it! I am having so much fun. A lot of guys have obviously hit on me and I am getting thousands of calls, but I’m not ready to be with anyone. I want to stay focused on myself and my family and my work. Then, maybe in six months or a year… but for right now, I’m just too busy for a relationship.”