In How to Train Your Dragon 2, Snotlout and Fishlegs fight each other for Ruffnut's attention and affection. Their efforts are useless however, as Ruffnut shows no interest in either of them, even recalling how one of Snotlout's attempts at winning her resulted in him getting beaten and nearly buried alive. Despite Ruffnut's attention targeting Eret, both try desperately getting her approval. Both manage to save Ruffnut in the heat of battle, winning her affection, only for her to be ignored by them in the end in a comedic fashion. It is currently unknown whether she chose either of them after this.
Unlike Astrid, Ruffnut and Snotlout's personality's mesh much more together. Both are loud, impulsive and none-too bright; the perfect Vikings of tomorrow.
Note: Please add only ones that are part of the RotBTD fandom