BOSTON (CBS) — Isaiah Thomas has won over plenty of new fans since he arrived in Boston in February, but honestly, none of them can compare to his biggest fan.

Or maybe we should say, his richest fan.

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The Celtics point guard has been friends with Floyd Mayweather Jr. for the last five years, ever since Thomas attended one of Mayweather’s workouts in Las Vegas. Mayweather is a big hoop head, so the two bonded immediately.

“We went to a Robin Thicke concert later that night, and since then, we’ve talked almost every day,” Thomas told The Boston Herald of his friendship with Mayweather.

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No, a Robin Thicke concert is nothing to write home about. But what about a nice new car? Better yet, how about a $200,000 Bentley?

That’s exactly what Mayweather gifted to Thomas in February.

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“He’s given me a few gifts before, nice ones, but that one was unbelievable. It had everyone in the NBA talking,” Thomas said. “Every team we played after that, guys would come up to me (and ask), ‘Where’s the Bentley, does Floyd got something good for me?’ It surprised everybody.”

Thomas said the 38-year-old Mayweather treats him like a little brother, and he’s supported him throughout his career. Thomas said if he can make it to his May 2 title bout against Manny Pacquiao, he’ll be there.

“If there’s something that week, we’re in the playoffs and we have a day off, then I’m going. I’ve gotta be at that fight and show my support.”

This brings up an interesting predicament. Pacquiao made it known in 2008 that he was a big Celtics fan. Thomas said that Mayweather is a fan of any team he plays for.

So with Thomas now draining shots for the Celtics, will Mayweather change his allegiance to a team his competitor also roots for? Thomas isn’t so sure.

“If he hears that Pacquiao is a Celtics fan, I don’t know what he’ll do.”

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Either way, it’s never a bad thing for a team to have at least one fighter in their corner.