Give him a few moments of pondering the train of thought that went between "upset over kiss" and "we could be spicy," and he might just figure that out. He was a little distracted by the spicy bit.

It was looking more and more obvious by the second that yes, Shinji bringing it up probably meant Shinji was into it. Which was great for Shinji if so, because it would have taken Kai a very long time to reach a point where he thought it'd be fine to bring it up himself. It wasn't a need, he didn't want Shinji to feel pressure in any way, he didn't know what he was doing??

"Well then. Sure seems that way. Definitely on the table." This was a very smooth conversation. "Have... have you needed anything?"