(n.) A sexual realtionship between two or more people in which fellatio is the only form of affection/contact. Usually pejorative, suggests the relationship is lacking.
Term applies mainly to heterosexual relatioships but also acceptable when used in malehomosexual context. Not applicable in female/lesbian relationships.
"Susie is so deluded. She thinks Bob likes her but they don't even make out or have sex. She just comes over and blows him. That's not a relationship, that's a fellationship"
when two people (regardless of sexuality) act so much like they are in a relationship with each other that they really kind of are, but they reassure everyone that they are not a datingcouple.
Brad Pitt and Jennifer Aniston are in a nolationship, because they act exactly like they're a couple but they tell everyone they are not dating each other.