It's all a lot to think about - while Herbert kisses him, he struggles to process everything that had just happened. He's looking more like his normal self, at least, just...paler.

He is also, in spite of himself, trying to analyze the situation. At the comment about soulmates, he blushes a little, smiling timidly...before realizing something.

"...it was...around my neck, and...your wris-" A little gasp of excitement. "Wait - wait, Herbert, I think...I think it's because you...because you let me drink...?"