Barney and Lily have a unique friendship, which is for the most part platonic. The two of them met sometime in 2001, after Barney had met Ted and Marshall. They 显示 更多 of a stereotypical brother-sister relationship with them making fun of each other and coming to the other for advice. Despite this, they have shown to have a small interest in each other sexually.
From Barney's perspective, he most likely sees Lily as his best confidant despite knowing that she can't keep secrets. Barney let her know that his childhood dream was to be a professional violinist. Also, Lily was the first person...