[Ah... There was never any doubt in his mind, but at this moment, seeing Sonic so vibrant and happy makes it crystal clear: he truly loves his organic counterpart. That fight, no matter the consequences, was worth it, just to see Sonic smile and laugh so freely again. Neo will gladly accept the limitations of his own body if it means that his boyfriend can express himself to easily and fully like this, and being able to make him smile so is Neo's greatest accomplishment.]

I wasn't aware I could do it either.

[It's not as though he even really understood it until he was in Sonic's body experiencing it, and apparently his own body can react in kind now that he does get it. He's happy, and he wants to express that, and it manifests in a mirror of Sonic's own happiness. Fitting.]

I'm glad you like it, because you're undoubtedly going to be hearing it quite a bit.

[Sonic makes him incredibly, unbelievably happy, after all.]