Spike really can't keep himself from laughing — as close as he and Jack have gotten in the past few months, some things never change like how he'll always think like a villain and Jack will never step out of his mould as a hero, as someone who will never be looked down on, who'll never be beneath.
"You really think that would've gone over well? You think he'd trust you enough to show vulnerability, let alone ask for help? Because when I was in his exact situation, that was the last thing I wanted."
You remember that, don't you? Not a lot would've had to change for him to still be where Tyki is, alone and miserable and drowning in regret. It's a goddamn miracle that Spike's as well adjusted as he is.
"Scaring the shit out of you is the only way to guarantee we'll be left alone or put out of our misery."