Vaterkomplex directly translates to "father complex." It's a psychological term referring to unconscious associations or a complex of repressed feelings resulting from early relationships with one's father.
In the song, it's used to describe the protagonist's struggles, hinting that their difficult experiences and choices (like "Party und Sex") might stem from unresolved issues related to their father's absence. This makes it a unique and thought-provoking word that adds depth to the lyrics.
ENNIO's "Komplex" throws us right into a story of a young woman struggling with a difficult past and present. Her father was absent, off getting cigarettes, and her mom was too lost in her own world to help, leaving her feeling alone and adrift. She tries to cope with her pain through partying, sex, and drinking, always looking for another drink to "lift off" from reality. It's a cycle of trying to escape, but it only leads to more heartache.
The singer is clearly affected by her choices, feeling the pain of her distance and the sting of knowing he's not the only one. He sees her self-destructive patterns, how she forgives herself "immer wieder viel zu viel" [again and again far too much] with just "bisschen was zum Ziehen" [a little something to pull on]. He's scared of getting lost himself and questions why he endures all the pain. Even though he knows she's hurting, he also feels like she doesn't care about the broken hearts she leaves behind. It's a really honest look at a complicated relationship and the struggle to break free from a painful past.