7. We cried when Sheldon and Amy decided to be more intimate with each other
After years of dating—and a failed breakup that left both parties lonely and miserable—Sheldon and Amy made the adult decision to finally have intercourse. (Or, "coitus," as Sheldon preferred to call it.)
Aside from using scientific phrases to describe such a personal encounter, we couldn't help but tear up as we watched the couple share such a tender, sweet milestone.