Jimmy and Gretchen take their relationship to the next level.

An episode spanning the course of nearly three years, we see the events that lead up to Gretchen and Jimmy meeting.

Jimmy meets Gretchen's parents.

Jimmy opens up emotionally, which completely freaks Gretchen out.

After Jimmy accidentally sleeps with an A-List celebrity, he and Gretchen embark on a sex arms race to even out their score.

Jimmy begrudgingly joins Gretchen, Edgar, and Lindsay on a "Sunday Funday."

Gretchen makes Jimmy come over to her disaster of an apartment.

Gretchen inadvertently asks Jimmy for a key to his house.

Jimmy attempts to take Gretchen on a date.

Jimmy and Gretchen find themselves falling for each other despite their better judgment.