Justin Bieber back with ex-girlfriend?

Justin Bieber’s ex-girlfriend has sparked speculation they have reunited. Caitlin Beadles, who split from the Baby hitmaker shortly before he found fame early last year,  spent time with the 16-year-old star in the Bahamas last month when he was doing a photoshoot with Kim Kardashian.

On June 6 she Tweeted, “Bahamas here I come! Gonna be an awesome week!”

She followed up the message on her return a week later, posting, “What happens in the Bahamas stays in the Bahamas!”

A few days afterwards, when Justin tweeted that he was “back in Canada”, Caitlin again took to her page on the social networking website to apparently express her feelings.

According to Life and Style magazine, she posted, “I hate when you have to leave. It’s like half of me is gone. I miss you already!”

Despite their split, Justin and Caitlin have remained close, with the One Less Lonely Girl singer flying to see his former love last August after she was involved in a serious boating accident.

In December, he serenaded her onstage during a concert in Georgia.

However, despite the speculation, Justin insists he is not romantically involved with anyone.

He Tweeted, “IM SINGLE and READY TO MINGLE!! Haha. (Sic)”