Heeeey so I know you're technically an adult and all, but as your teacher and the older person, she has a duty of care towards you. Allowing a romantic relationship to even become a thought is unethical on her part. It's not a good sign of who she is as a person.

Don’t let anything get beyond “normal” until you’re no longer her student.

Love will wait. It’s far better to be able to honestly say that you didn’t start your relationship until after she stopped teaching you. She could literally go to prison over this. It’s not a small thing.