No one has to know (Reader x Bad Sanses)

Nicknames

Nightmare Sans
-he would call you "queen" or "darling"
-you would call him "king" and "dear"

When you are crackheads:
-you would call him "Tentacle Hentai" 😂
-he would come back with "Tentacle lover"
-this is when things get embarrassing
-you both awkwardly laugh it off

Killer Sans
-he would call you "Star" or "Dear"
-you would call him "Dear" as well and "Babe"

When you are crackheads:
-you would call him "Knifebando" 😂
-he can only reply with "Knifu" but that is when the part turns soft

Error Sans
-he is picky with nicknames
-in front of everyone, he would call you with your first name, he would sometimes add "dear" after that
-when you are alone, your nicknames would be "Flower"
-you call him "Glitchy" in public and private, you just love that

When you are crackheads:
-either "Windows Vista" or "Windows XP"
-you call him like that only to piss him off😂
-he gets somehow annoyed and mad when you tease him with those crackhead nicknames (sometimes he even glitches)
-you then hug him to calm him

Dust Sans
-he would call you "Sunshine" and "Love"
-you call him "Love" as well

When you are crackheads:
-you would start cleaning his head and call him by his name Dust. But like, he needs some time to realize
-he would throw you in the bath with water with your clothes on after that, I'm not joking 😂

Horror Sans
-he would call you "Doll"
-you would call him "Teddy Bear" or "Love"

When you are crackheads:
-you called him once "Axepresso" and he took that as a nickname and a compliment

Cross Sans:
-he would call you "Baby Girl" and "Babe" everywhere
-you would call him "Baby Boy" and "Baby"

When you are crackheads:
-sometimes people think you are siblings (because you sometimes wear similar clothes) and you would jokingly tell eachother "Brooo" and "Siiiis"
-some of your friends took it real and were like: OMFG INCEST (but you explained it was a joke)