1. Despite what everybody thinks, Bolin's the dominating one in the relationship, or, at least during sex. He has years of experience on Iroh, with males and females, while the General's only been with a few women.

2. They're really big on trying new things during sex. Roleplaying, bondage, and lots and lots of Kama Sutra positions from a book that Jinora 'accidentally' dropped outside their room.

3. The first time they used handcuffs was when Iroh asked Bolin how his metalbending was going, to which Bolin dishonestly told him that it wasn't going too well, wanting to surprise him later. The General didn't know that he was being lied to, and only found out about how well Bolin could metalbend when he chained an unsuspecting Iroh to the bed that night.

4. Mako's actually pretty okay with their relationship, mostly because he knows how overprotective Iroh is of his brother. Zuko feels the same way, but vice versa. He's also totally over the whole homosexuality thing, since he had something going on with Sokka, back in the day. Korra and Asami are the mothers, always giving both of the boys ominous death threats if they don't treat eachother right.

5. Bolin is the daughter Iroh's mom always wanted, and Bumi is glad to have a son 'without a pole up his ass.'

6. Iroh teaches Bolin about the different kinds of teas, and Bolin discovers his favorite is Jasmine.

7. Iroh often comes to watch Bolin at pro-bending matches, and it makes the earthbender preform lot better. Thanks to Iroh's boost of confidence, the Ferrets end up winning the tournament.

8. Despite the seriousness of the situation at the time, Iroh still flirted with Bolin, earning several smacks from Asami. While Bolin wasn't looking, of course.

9. Both boys always try to be romantic, attempting to make dinner, but they always set something on fire, and realize they're better at eating than cooking, so they both end up getting takeout and laughing over their horrible housewife skills.

10. Bolin always feels guilty about not being able to give the Fire Nation heirs to the throne, but Iroh and his family always comfort him, telling him that it's okay, they can adopt, or that Iroh's siblings will have children too.

(Might expand to other ships! Tell me what you think, or request a ship!)