Got into a discussion with Middenway on I'm-A-Twit about relationships in stories in general, and I typically shifted it to Mignolaverse.
There's obviously not many romantic relationships in B.P.R.D. and Hellboy. We had the questionable route del Toro took with the films, the hints towards Liz/Abe in Hellboy Animated, but in 'core' Hellboy & B.P.R.D. there's not been a lot affecting the major characters. The majority of it is interpretation - for example, one could read War of Frogs #3 and come to the conclusion that Ashley is indeed gay and crushes on Liz, but someone else could read it and not get that vibe at all based on what she says - and as the characters tend to rarely be in the same room together there's little chance for things to develop on the page.
But then we have platonic relationships, largely between the male characters. For example, there was the dynamic between Roger and Ben, one of the strongest and most interesting bonds in the Plague of Frogs series.
I think there are major relationships - romantic ones - under the surface of B.P.R.D. in particular. I think just before it started, there may have been something between Hellboy and Kate, largely due to the conclusion of Conqueror Worm. As B.P.R.D. progresses, it seems that it could shift to Kate and Abe as they're often together in and out of the HQ. It's how I interpret it. I see them working together less like friends and more like an established couple. It just works on that level of natural behaviour.
Obviously I'm five/six trades behind most people in terms of the story, so things may have changed, but I'm wondering what others think of the relationships of any kind in Hellboy and B.P.R.D.?