You might be a little jealous, but you've got me. You don't have to be.

[The little kisses continue, soft and reassuring, even as Oikawa ends up with a quiet smile; he was jealous because he likes him, is that it? It might be. That is probably the answer. Rubbing his nose in place, then tugging to get Iwaizumi to look up at him, Oikawa kissed him plainly, murmuring quietly.]

I like you so much. No one knows me better than you - I know you better than anyone else too.