Steele from Balto/Balto from Balto Movies 
Balto Relationship is this: Balto and Steele are rivals. Balto has hatred for Steele because he mocked him for his wolf appearance and also been threaten by him because of jealousy. When Balto sees him trying to take Jenna away from him he tries to get him away but when Jenna was flirting with him, he thought Jenna was into him till Jenna reveal his attention he glad to see her not into him. When he tries to enter the sled dogs, he'll be deeply rejected by Steele and be disqualified, When he finds out that Steele was lost, he tries to save him even after all what he did to him but Balto would help Steele to bring them back home but Steele would deeply rejects his help and wouldn't even care if he made Balto to get lost. 
Steele Relationship is this: Steele hates Balto for making the public rethink about him after he's been outrun by him, he was disappointing to see Balto outrun him as the public was focusing om him instead of Steele, he would cause him to have hatred for Balto. He would show his true personality when he's not seen nor supervised as he'll hurt Balto physically and emotionally and also bully who ever is friends with him. He would get jealous of Balto more to see that Jenna is seen with him and it angers him way more when she admits that she loves Balto. However, Balto would help him but Steele would deeply refuse so he doesn't get any fame from Nome and if he is left-out of the sled-team he would cause him to be lost. He would also make lies about him and what he hasn't done. In the end, Steele would be shocked to hear Balto's back and would cause his reputation as a hero to be forcefully transferred to Balto. 
It looks like Balto Fandom, other people have not followed that idea at all. There are Pictures and Stories where Both are Romance Attractred/Having Sex with each other.