Most relationships are iconic for several reasons, like Superman and Lois Lane, or Mr. Fantastic and Invisible Woman. However, there are some that just end in heartbreak. The ones that are either doomed from the start, or end in such a way that everyone's crying.

Take Spiderman and Gwen Stacy. A young love that went downhill the moment her father died, and led to her death in the midst of his battle with the Green Goblin. The way things went, there was just no hope in the end.