The angel quiets for a moment, surprised by the sudden bout of honesty. There's no mistaking the vulnerability in Yondu's words, and the last thing he'd want to do is disrespect that kind of sentiment. And something about the man, and what he's talking about - Aziraphale feels it, although he thinks best to avoid bringing that up, for fear of it sounding perhaps a tad too invasive.

"Oh, I..." He stammers at first. "I'm quite sorry to hear that.", he adds, earnest.

Looking for the right words to say, he settles on:

"I'm sure, whatever may have happened, that, deep down...they must've known how much you cared about them."