There's no question this must be excruciatingly difficult on the entire family.
The source said:
[Image via FayesVision/WENN.]
"I miss you, and I’m sorry."
…Which was an obvious nod to his perpetual 'I'm sorry' for stepping out on estranged wife Paula Patton.
The performance was full of tears, sniffles and his lady's name in lights at the end of the song.
And if it sounds like we're making this shizz up, you've never been so wrong.
Watch Robin get emotional again in the video HERE!