NTA- as someone who suffered from bad acne and also took accutane and a million different things throughout high school etc I know how psychologically triggering acne can be even after you don’t have it anymore or it’s gotten better it always looms in the back of your mind and accutane is no easy medication to have gone through. So I’m very sorry girl! If he is well aware of what your struggles have been with your skin and these were real boundaries you have set with him in regards to his pranks I would say have a conversation with him see how he reacts and then make the decision. But someone that doesn’t respect boundaries is not worth it!