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They had a bromance before we even had the word. And tributes like this are the reason why.
"First off I am so sorry I am not there with you today," Feldman writes. "By that I mean my physical body is not with your physical body. However you know that my heart is right at your side."
Feldman tells Haim that the reason he opted not to go to the 200-strong private service was "out of respect" for his family, particularly his mother, who wanted "to minimize the media attention as much as possible."
We're guessing releasing an open letter to your deceased friend online may not exactly grant him solitude, but the intention is definitely there.