spiritedquill
Summary: Dean can’t say the words. But Cas knows. He knows exactly how to break Dean’s walls down; too much but just enough.
Based on this prompt from tumblr: Imagine person A lightly tracing “I love you” over and over again on person B’s back, assuming that person B is asleep. When person A is lying on their back, getting ready to sleep, person B moves closer and wraps their arms around person A, whispering softly, “I love you too.” Bonus if that’s the first time person A has ever declared their love for person B. —@otpprompts
Also based on the pictures of Jensen and Misha watching the sunset, and the episode "Angel Heart."