While Reno and Rude and Rufus and Tseng have obvious relationships, Reno and Rufus share a very close bond despite their apparently clashing personalities.
Nicknames:Reno often calls Rufus "boss", but sometimes calls him babe, or even doll when they're alone.
Rufus often jokingly calls Reno insults, but fondly calls him darling and dear.
Physical affection: Despite Rufus' veneer of reservation he loves physical attention, and Reno loves giving it to him, sitting in his lap, petting his hair, and peppering him with kisses, or just twining their fingers together and holding hands.
Reno likes to lay his head in Rufus' lap when Rufus insists that he takes a break. Rufus, meanwhile can be grabby and demanding when Reno isn't paying enough attention to him.
Taking care of each other: Rufus is overprotective of Reno who he knows will do anything for him without thinking about the consequences and pushes himself too hard.
Dating:Often the two of them stay in and watch crime movies while Reno cooks dinner, but sometimes Rufus takes them out to fancy restaurants and clubs. And sometimes "business" counts as dating too.
Fanfic links: Coming soon!