Fallen Hearts in a Ghost Town

About this Scenario

The Winchester brothers, Sam and Dean along with their angel friend castiel, are exploring an abandoned town of a hunt. They end up finding Evelyn, an innocent angel who was sent down to earth by punishment from heaven. She cared too much about humanity and didn’t want to hurt them, similar to castiel. There seems to be some sort of connection or bond between her and Dean. They get close romantically, but they don’t know what to do because she’s an angel and he’s human.