They're friends now – and gradually, Dave starts to feel like that's enough.
He still feels what he's always felt for Kurt, even before he let himself admit it. He knows Kurt doesn't feel it back. Kurt has a boyfriend, and Kurt's happy, which means he smiles all the time now, and he's so damn beautiful when he smiles that Dave can't be anything but happy for him.
It's too much to think that Kurt might love him back.
But to be allowed close, to be his friend, and just to quietly love him without expectation – for now, it's just enough.