When it comes to relationships, a friendship can hold a far more nuanced and significant place in our hearts, than perhaps we fully appreciate.

The Platonic relationship, an ideal talked about by the ancient Greek Philosopher Plato, recognizes the existence of a closeness of mind and soul between two people, absent of any physical attraction. This kind of affection and tenderness is captured in letters and stories throughout history — friendships that have been as deep and intimate, meaningful, and powerful as any romantic relationship, and, says author Raina Cohen, “friendships could be the thing that makes life feel full and complete.”