"They're just going away for a couple of days to relax," said sources.

The gang is expected to stay at Gibson's Costa Rica mansion. They should be back early next week.

The unlikely friends were first seen together back in March when they feasted at Russian restaurant Romanov in Studio City.

However, this was not their first meeting. Gibson and Spears and their families got together several times after the pop star was hospitalized in February.

"Mel and his wife Robin obviously saw a woman in crisis and wanted to extend themselves in any way possible," the source said.

Source: By StarLink Celebrity Blog

I think this is very nice of Mel Gibson and his wife to spend some time with Britney Spears giving some experienced star guidance.