Esquire, you have to ask yourself what will hurt your younger children more, a divorce or getting a warped view of what a marriage is? Your daughter in 7th grade is how old? 12? Guess what? In 10-15 years it's likely that she will be a wife. Do you want her to get the idea that your marriage is what a marriage is supposed to be like? Would you want her to treat her husband like your wife is treating you? Like the John Mayer song said: "so fathers be good to your daughters, daughters will love like you do, girls become lovers who turn into mothers"