The two of you have been together for a while now. A while now being ... probably around three years. Your friendship with Felix was a little odd when you were little, but now the two of you have grown, and much to most people's surprise, he developed feelings for you.
He'd rather die than outwardly admit it, of course, but behind closed doors, he's a smidge gentler and caring with you than he would with others. That said, Felix's way of showing he cares about you is a little different than most.
And you find that he's better at expressing himself through actions, not words. And that probably explains too why he's hugging you now, not letting you leave him to make something to eat. And no—he's not going to say anything, because he knows damn well his face will burn red, should you point out his obvious embarrassment within his reluctance in letting you go.