My Secret Desire

I never thought I'd write this confession as a high school teacher, but here it is. Lately, I've found myself strangely drawn to BDSM play in private with my partner, whipping, light bondage, and role-playing have become our secret world away from the classroom and students. It's so unlike me that even as I type this, I feel utterly ashamed. Can anyone relate? What would you say if you knew?