“its me, dean” a stern voice whispered in his ear. “Cas??” he gasped. Castiel began to kiss his neck. “but cas” he moaned “why are you-” cas kissed him, interrupted him mid-sentence. “I love you” Castiel whimpered; trying to get the words out.
Cas had loved him since he first met dean. Love at first sight. Fearing dean would shoot him down he kept it a secret. When dean was in hell, cas did everything he could to get him out of it. He had to drag him out; which resulted in the scar on his shoulder. He was very weak after so he disappeared for a coupled weeks to heal. When he was ready he couldn’t resist the urge to see dean. When he saw him he had to tell him the truth.
“I always have loved you dean. Always will.” Cas sees the scar his hand left. “oh I didn’t know I hurt you im so sorry I-” cas tries to get up, ashamed of himself, but dean stops him. He kisses castiel firmly and passionately. “I love you” he replied “I’m not hurt, not anymore” he puts Castiels hand on the mark. It matched perfectly. Holding his hand there dean told him “see this? You saved me. You never hurt me. I love you, and if you truly feel the same then im the luckiest person alive. You went all the way to hell for me. I hope this scar stays forever, because for me? It’s a symbol on how you risked your life for me, a symbol of our love.”
Castiel starts crying tears of joy. He pushes dean down and climbs on top of him.