No experience with nuns or fire escapes - but I did have a strait-laced principal who made a point of walking between boys and girls who were holding hands. (He later married an English teacher who some would say was a "free spirit" and others less delicately called "tramp.")

When he called an assembly to lecture us about the evils of going steady (prompted by an abrupt marriage of the starting quarterback to the head cheerleader in their senior year), my wife and I sat in the audience holding hands. (As luck would have it, our last names both began with R, and our assigned seats were next to each other. In the dimly lit balcony. In the next to last row. I kid you not.)

High school - the good old days (?)