It's criminal that this fic hasn't been recommended yet. This is one of the more epic fanfics to exist and definitely the best "Kick-Ass" one.
Precocious Crush by
Makokam
Summary: So, you meet someone who gets you. You have fun together, you like each other, and he's cute. But he says you're too young. What are you supposed to do? Just let it go?
Review: Technically, a Dave/Mindy fic from Mindy's POV. This was started back in December '10, has 265 chapters, is unfinished and is still getting updates. This was started after the 1st movie, but well before the 2nd one, so it ignores the events of Kick-Ass 2. I say it is technically a Dave/Mindy pairing because they still haven't gotten together yet, as Mindy's age is a major plot point, as Dave is of age and Mindy isn't. However, that doesn't stop Mindy from focusing her affections on Dave even though he doesn't return her feelings. The being said, while Dave doesn't have those sorts of feelings for Mindy, she is still his bestfriend and his vigilante partner. So despite the romantic feelings being completely onesided, the Dave/Mindy dynamic actually ruins one of Dave's relationships.