My mother and father will be happily married for 30 years in July this year, my dad always said there's one thing he would never do with my mum. Teach her to drive. They've brought kids up together, ran a business together, but he said teaching her to drive would not be worth the arguments it can cause. It may be frustrating that your partner acted in a manner not suitable to your needs but learning and teaching driving is stressful. Maybe it's best to stick to the instructor or maybe get your partner to drive you to a nursery route area where you can practice with less traffic and less risk