WAH - Confused and Depressed

[Lost&Lonely]

Yesterday, when discussing division of assets and expenses the topic of the boy’s tuition was brought up. It costs us $40K/yr in expenses for their schooling. I've always thought that they should contribute something towards that, but H was always adamant that we pay 100%. I don’t think I can afford $20K/yr. I was thinking that I pay a 1/3, H pay 1/3 and boys responsible for 1/3. Also, as an incentive for older boy, H said he could have a car if University grade was above certain average (I didn't agree with this, but he did it anyway). Older boy acheived the grade and now we're paying for lease on practically new vehicle (which I have to pay for now as part of shared expenses). I went along with these actions because I believed my H would make it work somehow (he's very good and creative with money) and I had the security and support of the marriage. How do I bring this up without making him angry? I still want to work on the marriage and I know bringing up this topic will not help. Advice please.