As soon as Sam leaves to get dinner, Dean calls for Cas. The hunter has made up his mind, once and for all. Screw that Cas is an angel. They'll make it work, end of story. Dean stands and walks around his room as he speaks.
"Hey Cas, I've made up my mind." He said. Immediately there was a flutter of wings and Cas appeared mere inches in front of him.
"And?" The angel demanded, his blue eyes staring into Dean's green ones. Dean grinned, and instead of answering with words, he pulled the angel to him and kissed him passionately.
Cas kissed him back equally, moaning in pleasure and excitement. Suddenly he hears the sound of Dean's Impala in the parking lot, and pushes Dean off. He sticks his finger on the hunter's lips before he can say anything, and smiles faintly.
"Later." He says, and there is a flutter of wings right as Sam swings open the door.