Well, from the very beginning, Jimmy Cooper was hitting on someone else's wife.
Then he stole a bunch of people's money to "provide for his family..."
Jimmy Cooper totally ruined his daughter's cotillion.
Then he whined and whined and whined about having to actually deal with the consequences of stealing millions of dollars.
Julie was right: Jimmy Cooper should have been put in jail right then and there.
Sandy Cohen should never have helped Jimmy Cooper.
Because Jimmy walked, and while he was being divorced by Julie, he did this:
Jimmy, the largest and oldest baby, didn't tell Marissa about the divorce until she was in Tijuana. Then THIS happened:
From day one of the divorce Jimmy tried to turn Marissa against her mom, because all he cared about was the "kiddo" thinking he was cool.
THEN he hooked up with Kirsten's 25-year-old sister, Hailey.
He proposed to her in a moment of mid-life crisis, because he was busy being drunk on a boat instead of being a dad.
THEN he decided to get back with Marissa's mom, Julie.
THEN HE DECIDED TO BAIL ON NEWPORT.
When Marissa found out her mom and dad are sleeping together, she visited him on his boat house and said, "You know, for once, I wish you would just grow up and be like a real dad." It was the smartest thing Marissa Cooper EVER SAID.
LITERALLY ONE SCENE LATER, Jimmy sat down with Sandy and Kirsten to tell them he was moving to Maui to charter yachts:
"I need to get away from here before I do any more damage to myself. Or...to my kids. Or to...to Julie. I love Newport but it's ... it's no good for me right now. In the last year I've nearly been arrested and bankrupt for stealing from my clients, I got punched out at my daughter's Cotillion, I lost my house, my family, I tried to kiss you — which I, I, I still feel terrible about — I spent this summer drunk on a boat with your 25-year-old sister, and now I'm getting back together with the woman who started this in the first place."
- Jimmy Cooper, idiot and person who blames everyone but himself.
Marissa told him how devastated she was that he was leaving, saying he was the "only person keeping [her] sane."
And Jimmy decided to leave anyway.
He LITERALLY said the following to Marissa:
"You're right. I need to learn how to be a real dad so I'm ... uh ... leaving."