Bromance: Vienna Blood

A bromance is a male/male relationship that is as close a friendship as a relationship can get without it being a marriage. 

Some bromances definitely have a sexual component. Marcus and Esca in The Eagle could be sleeping together; it wouldn't change the plot much. Holmes & Watson are not sleeping together but most versions (television and movies) at minimum comment on the possibility. Some bromances, such as Chandler and Joey, don't sleep together but in another universe... 

And some bromances don't have a sexual component yet the relationship is intimate, if not through touch than though knowledge of each other. 

Oskar and Max from Vienna Blood are one such couple. The closeness-without-sex works because (1) both men have their own professions (not just their own girlfriends); (2) both men are amused by each other's foibles; (3) both men appreciate the other's perspective; (4) both men confide in each other, which for the time period (and the time period is taken into consideration) leaps a gap in age, profession, class, and blood.

That is, they operate in different spheres that overlap. Their lives are Venn diagrams. Yet they also absolutely trust each other as Season 4 indicates when Oskar trusts Max with political secrets. 

I like bromances of all kinds. I appreciate when the writing can produce a bromance that relies on difference, even separation, to make it work.