Lonicera by zation
Word Count: 46,173
Summary: Original prompt: dean and Sam are serial killers and they for some reason kidnap Cas and Sam wants to kill him but dean wants to keep him and while Cas is their captive he learns they aren't really the bad guys and they kill only people who have managed to escape justice and prison time. So over time Cas falls in love with dean and stops trying to get away from the brothers. Until he's rescued and the brothers are incarcerated then he has to save them while everybody thinks he's crazy. Bonus if Cas is a teenager like 17-19 also bonus if it's abo universe, if you do the abo I would prefer alpha dean omega Cas and maybe some mpreg
Or,
The one where destiny had a discussion with faith and they decided to have some fun, much to Dean and Cas’ chagrin.
Comments: 10/10. This really isn’t as angsty as the summary reads. The majority of the fic is them getting used to each other and Dean falling in love with Cas and vice versa. The rescue part only takes one chapter and is really brief and goes right back to the fluffy parts, so don’t worry about angst! There’s no angst! It’s super domestic and fluffy and have so much sexual tension it’s amazing. I really love this. Dean and Sam kidnaps Cas but destiel happens and there’s sexual tension and fluffiness and it’s amazing. The Mpreg also isn’t the focal point of the story, which I like. The focus is Dean and Cas and their complicated relationship.