[ Not too long ago that would've been exactly what Spike would've done — shrug, deflect, squirm out of those too-warm hands grabbing him by the arms. He does none of those things, tho Jack can probably feel him tense, see the way he's avoiding eye contact. He's not good at vulnerability. It gets you killed and then you have moments like these where vulnerability is exactly what you need. He swallows, steels himself to look back at Jack. ]
Don't be fooled by the signs, don't read in between the lines.
[ He knows what he is. People've been telling him that his entire life. ]