While we were dating, both my husband and I moved in together into an apartment. He paid the rent, I paid for groceries and most of the bills (he might've paid 1?). The reason being is I was the one that did the shopping so it was just easier that way. He did make a fair amount of money more than me at the time ($40k?).
A few months before we got married, I ended up taking care of all the bills and he would just deposit his paycheck into my account. We already knew we were getting married though and he hated taking care of bills.
You can't out-exercise poor eating habits.