"It doesn't have to be in the lips. It's all right." He says, reading her hesitation. Honestly, if he weren't in a relationship himself, he might not have shattered the mystery so quickly. Nor would he be so cool about it, although his pale face does betray a little color.

...actually, now that he thinks about it, there's a nonzero chance she might just want to join in, if Shantae actually saw this...

"Trust me, I've done plenty of tests with lab rats. I--I don't mean personally kissing them, of course. Observing their behavior. I found that any gesture of affection works."

Okay, NOW he's blushing.