Samifer Fics with possessive!obsessive!lucifer and Ducifer Fics

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(Posting on mobile for the first time so I don't know how it'll turn out. Also, mods, I'm not sure about the tags. Please feel free to add or remove whatever)

Hi all :)

1. I am looking for Samifer Fics with possessive!lucifer who is obsessed with Sam. Can be canon or AU, I don't mind, just as long as it's what I'm asking for. (I don't mind dark!fics). I am on mobile and I don't know how to link Fics, but I have read quite a few, especially the serialkiller!ones. However, that's not to say to skip out on recs. Even if it's a totally obvious one please tell me, because there could be a chance that I haven't read it :). As per usual,no non-con please.

2. I am also looking for Samifer Fics where Lucifer seduces Sam into saying 'yes'. Again, I've read a fair amount of them, but please, if you think it's good, tell me :)

3. I am a massive, MASSIVE fan of Ducifer (Dean/Lucifer). Unfortunately it's a rare pairing so there are hardly any fics on this. I have been through the whole tag on Ao3 several hundred times and been through all the tags on tumblr and I still crave more. I will literally take anything (angst, schmoop, fluff, hurt/comfort, dark!fics, au's.....). Just, please. Again, no non-con please! Dub-con is fine!