[ okay, yeah, personal space, he can work on that. he parts his lips to ask for an exact measurement of what personal space includes, but the second rule gives him more to contemplate. ]

I never intended to— sneak. [ it's not his fault your face was under a car. just convenient for his ten story tall snooping. ] Your heart rate was elevated but stable.

[ by the way, he hears that - your heart. you'll never need Life Alert no matter how elderly and frail you get, bud, isn't that great? what a helpful neighbor he is. ]

I'd have noticed if you went into cardiac arrest. You were never in any danger.

[ it's genuinely meant as sincere reassurance, but clearly castiel doesn't pick up on how creepy it sounds otherwise. ]