AITA for Expecting to Occasionally Drive a Car I Helped Pay For, but My Girlfriend Says It’s “Hers” Now?

Edit: What should i do next, told her im done with the relationship and shes working outta town for 14 days straight.

My girlfriend (34F) and I (36M) have been together for five years. When she moved to my city two years ago, she needed a car. At the time, she was financially stable—making $100,000 a year and renting out a home she owns for extra income—but she still asked for my help affording the car.

Wanting to support her, I put down $1,500 for the down payment and paid $400 a month toward a $525 car payment for two years, totaling over $10,000. While she used the car full-time, I had my own older car and didn’t drive hers regularly.

This year, she has fully taken over the payments. Now, since she’s the only one paying for it, she has decided that I can’t drive it at all anymore—not even when she’s away for 1-2 weeks at a time for work.

Her reasoning? “I’m paying for it now, so it’s mine.”

I brought up that if the roles were reversed, I would still acknowledge her past contributions and allow her to use it occasionally. But she dismisses that and says she’s just setting “financial boundaries.”

For context, we also bought a house together last year—but it’s only in her name, even though we split the mortgage 50/50. When we bought it, she told me, “This is my moment,” which rubbed me the wrong way because I was equally contributing to the payments.

This isn’t just about the car—it feels like a bigger issue of financial fairness and control. She was fine accepting financial help when she needed it, but now that she’s secure, she’s acting like my contributions never happened.

Am I the asshole for thinking I should still have some access to a car I helped pay for? Or is she being selfish by rewriting history and making financial decisions that only benefit her?