Felix's eyes widen and his pulse speeds up at this ridiculously romantic gesture - not because it's romantic, he's used to that by now (mostly), but because of what it means. Sylvain's right: he doesn't need words to convey this message. Felix hears it loud and clear, and it's his turn to feel like he's melting right into the ground.

Which is why he's almost grateful for the teasing. Almost. His face scrunches up and he whaps Sylvain on the arm with his free hand. "Shut up. I take it all back, you're a menace."

Who knows whether he might have said more or not, because Sylvain puts his lips to work and Felix tips his head back with a satisfied little noise. Sylvain is, for better or worse, right; Felix has gotten softer here in this world, and sometimes he's still not sure he likes it. Right now, though, he's glad for it. The Felix of a year ago would never in a million years have been able to just tell Sylvain a thing like that, and as he's learned in his time here, some people need to hear things in words.