Henry wasn't exactly an expert of The Faces of Sam, but that certainly didn't seem to be a good one. He wasn't sure if he should be saying anything. After all Sam and Dean did tend to be a unit and there hardly seemed to be any sense in forcing his way into that. Still...

He wasn't close enough to hear Sam muttering to himself though he could tell the young man had spoken. No. No, he couldn't just leave it. If there was something he might be able to do to help, even if that something was to just be an ear, well, he had to offer.

"Do you mind if I ask what's troubling you?" he said once he was close enough to Sam to speak at a reasonable volume without feeling like he was invading the young man's space.