Your tense relationship with an authority figure is starting to become a lot more amicable, so you need to take advantage of this open door and build something. Ask them to a social event or at least book some one-on-one time with them. You two need to find some time alone in order to clearly communicate what you want to ask of each other and what you can give each other. Rely on your good communications to ease any potentially rough spots that may appear in the near future.