The former `Hills` star has been involved in an on/off relationship with the BMX racer since 2009 but the pair reportedly broke-up over the weekend, according UsMagazine.com.

Audrina was spotted enjoying her newly single status on 05.03.11 as she partied in Florida with Prince Harry`s close friend, polo player Nic Roldan.

According to witnesses, the 25-year-old beauty - who is currently filming her new reality TV show `Audrina` in the US state - only had eyes for Nic.

A source said: "Major sparks flew between Audrina and Nic on Saturday night, and the entire evening they couldn`t stop laughing and touching each other. Audrina seemed to be having the time of her life, dancing and mingling with guests, but you could tell she was especially focused on Nic."

After partying together on Saturday, the pair then met up again on 06.03.11 where Nic gave Audrina a "private polo lesson at the International Polo Club in Wellington".

Audrina has previously had an on-and-off four year relationship with her `The Hills` co-star Justin Brescia - also known as Justin-Bobby - and dated singer Ryan Cabrera.
sections: Celebrities