Who is Britney's mystery man?

I can’t help but be very curious over this mystery man who has been photographed all over the beach in Costa Rica with Britney Spears. Are they just close friends or is there a budding romance going on?

After the ordeal Britney’s been through lately, it would be so great to know that she has a real love interest going on.

I’ve seen on a few sites that people are referring to him as “Jason”. Surely they don’t mean the guy from Britney’s whirlwind Vegas marriage in 2004?!