I went into this with a bit more liberal view than I have now regarding students and coaches, My belief that adults should, and can, take care of themselves is intact. I believe love beats status (otherwise, we are backwards in our thinking, to Europe in the 1700s, when "commoners" could not marry nobles), that power balance is not determined on riches and status, and that we shouldn't judge others on what they choose to do in their relationship. It's simply none of our business, whether this is about gay marriage, age difference, or "creepy pictures". None of my business.
But. In a rink, the risks are just too big of young girls and boys getting inappropriately manipulated by coaches. I think there should just simply be a rule that does not allow relationships between coaches and students as long as they are in those respective positions. It's just easier. If I was a rink manager, I would say to every coach that this is the deal, and you sign a paper on it. If you want a relationship with a student of the right age, you find a way to get out of here and have that relationship elsewhere. You can stay and coach, but not that student.