Fellationship

Only having a relationship with some one based on fellatio...

A fellatio-relationship.

This fellationship is really going great!

Fulationship

Root words: Fu, meaning Fuck, and Lationship, meaning Relationship.

A Fulationship is having a false relationship with someone based only on having sex.

Unlike Fuck Buddies, which are friends who have sex with eachother... In a Fulationship you don't even have to like the person, your only in it for the sex.

"John is in a Fulationship with Jane... He doesn't even like her!"

"I think i want a Fulationship with Jane because she's so hot, but man is she stupid!"