Simply put, Beth treats Jerry like a doormat, and Jerry is generally content with being treated as such their marriage is best summed up by the images of each other they project during the off-planet couples therapy arranged by Rick in the season 2 episode 'Big Trouble in Little Sanchez' (she a snarling, alien beast, and he a spineless, submissive slug). She has more than a few lingering issues around her father's disappearance from and reappearance into her life, and her relationship with her husband Jerry (Chris Parnell) is dysfunctional in the most one-sided of ways. Over the course of Rick and Morty's run, we've learned that Beth was a bit difficult in her childhood (or, to use Rick's parlance, she was a 'scary f***ing kid').
Unfortunately, Rick's carelessness with his personal relationships seems to extend to those around him, in particular his daughter Beth (Sarah Chalke).