i want to say he’d be a little sensitive to her fear of brooms, but he’s the type to act first, think later, so he probably did try to convince her when they were at school (unless you meant more recently), getting her to fly with him on his broom to show her there was nothing to be afraid of (however that turned out, if she agreed to it etc is totally up to you, because getting overexcited that she potentially let him meant he decided throwing in a few dramatic turns would be fun…)