
The main issue, as I imagine it in my twisted mind, is that Kelli is sick of living with a narcissistic whale, and wants to be able to go to a buffet without that horrible hot shame feeling that comes when your partner eats so much fried chicken and jello that they pass out.
And Rosie is sick of living with someone who insists on making it not all about Rosie a whopping four hours out of every six months.