Sam, Liz’s best friend, is an important influence on Liz in many ways. Here, Sam helps Liz become more comfortable talking and thinking about sexual matters. (Kurt Cobain was the lead singer of the ‘90s grunge band Nirvana, and a major sex symbol at the time.) Sam is confident but also curiously vulnerable, and Liz seems to appreciate this about Sam, perhaps because she, Liz, is similar.