No matter what you writers of Supernatural say. Destiel is real. Just look at Cas in S03 E10 when Anna kisses Dean. Even if Dean is oblivious to Cas' feelings, Cas loves Dean and that is undeniable. Why not make a scene where Cas is somehow dreaming, and the dream is about him and Dean only. Not necesserily sexual, but definitely some display of romantic feelings from both sides in that dream. That would probably satisfy all the Destiel fans (at least for now).