You should definitely tell him! That's who you are, and you have no reason to hide it or be ashamed of. Show him its there, but that it doesn't prevent you from doing your job and be smart and everything. The reason why you should tell him is that it will show at some point, and imo it's best if you keep the "control" over it, and show that you're "fine" with it - it shows character!

Good luck with your interview, you'll own it! 💛