People were telling you that Todoroki was incredibly dense when it came to metaphors. But you chose to try anyway. Just out of curiosity..

"You make a lot of girls swoon just by looking at them right?" You say. He immediately looks concerned

"They die when I look at them?" He asks. The class face palm. Time for a different approach

"You make my heart swell with-" you start and he puts his hand on your heart.

"I'm sorry! Your heart is swelling?! Do you have a heart problem?!" He literally takes his phone out to call recovery girl with his hand still on your heart making sure it doesn't stop beating.