For 19 seasons, fans have followed the medicine, drama, and relationships of the doctors, residents, and interns in Grey's Anatomy. In the beginning, most of the focus was on Meredith Grey and how she managed to juggle a new job, a dreamy boyfriend, plenty of scandals, and a mother with Alzheimer's disease. As the show progressed, other characters were given the spotlight to see how they were managing their own professional as well as personal lives. With all of this time spent around the same people, close friendships were bound to happen.