In fact, there was a lot of beefcake. When Siegfried sets out to slay the dragon Fafnir in The Nibelungenlied, he traditionally strips down to his bare skin, as Uwe Beyer does in this 1966 version that we watched in German class (bodybuilder Samson Burke does not strip down).
In 2011, Charles S. Stewart crafted this nude figurine based on an old art deco design.
But no bonding, unless you count triangulations:
The Nibelungenlied feature soap-opera love triangles between Siegfried, his wife Gudrun, and his true love Brunhilde. Meanwhile, Alberich the Dwarf tries to woo the Rhine Maids, but they reject him,so he steals their gold.
Tristan und Isolde is about the love triangle between the Knight Tristan, King Marke, and Isolde.