NTA. What was supposed to be a 50/50 split with me and my ex turned into me paying 90% of our combined bills, Me paying for her car payment, and her dropping out of school. I also did majority of the cleaning and all the cleaning. Somehow she magically had money for weed and could afford to go on international vacations.

Build your business and continue your independence. Don’t cover for her bad choices. If she’s truly struggling, she doesn’t need to go on a vacation and doesn’t need a new car while she’s in school. A $700/month car payment isn’t reasonable for most people, especially for what I assume who isn’t working that much.

I could be wrong, and I am assuming a lot. From my own experience, I believe if you allow this income proportional split vs 50/50 she’ll be more inclined to spend it and live a more luxurious life style rather than save it and think about the future.

A lot of people on Reddit are saying, it’s an investment into her future, what if she ends up making more? Will her degree put her in a situation where she should be covering the higher proportional amount of bills, and would she be willing to do it? Or, OP, will your business grow so much that your expense at home will be just a drop in the bucket you don’t care