Biden talking about Obama

“He's genuinely my friend," Biden added. "I'd do anything for him, and I think he would for me ….this is a family thing, we know each others' families really well, the way that he loved my son."

Which one? Beau or Hunter? What kind of ‘love’?

https://www.nbcnews.com/storyline/2016-conventions/obama-biden-have-cultivated-surprising-bromance-n615301