Finn is the one who slowly gave Marceline the courage to confront her father.
Finn is the one who convinced Lumpy Space Princess to reconcile with her parents.
Finn is the one who drove Flame Princess to take her rightful place on the throne and imprison her benevolent dad.
The only person he couldn’t help was himself…
How to have sex: First go like this, spin around. Stop! Double take three times. One, two three. Then pelvic thrust. Whooooooo, whooooooo. Stop on your right foot, don’t forget it! Now it’s time to bring it around town. Bring-it-a-round-town. Then you do this, then this, and this, then this, then that, then this and that, and then…