Fics like Back to December

Sam, knowing he started the end of the world, would give anything to turn back the clock again. He'd give anything to go back to when Dean died and do things over. Because Loki had only been trying to help him. He'd come back to bring him sanity but Sam had made the wrong call, picking revenge over peace. He chose wrong. Why did he always choose wrong? Sam starts a tentative relationship of casual sex with the trickster after Loki tells him he's alive. It continues longer than Sam ever thought it would and it develops in an unexpected way. But when it develops past casual and into the emotional Sam tries to stop. But love isn't exactly something you can just quit. When Dean dies, Loki tries to help Sam move on, getting even closer to the hunter. But Sam can't just forget about his brother. He never can just let go.