I absolutely love those pictures by Aimo. They convey the entire landscape of Cullen's mixed struggles with so little space.
But regarding the thoughts/confusion regarding celibacy with Templars--personally I find all the information about them a bit scarce and skewed. I wish they had more upfront direct information, because I too assumed that when they took their "final vows" they were resigning from any form of physical fraternization with another person. I mean, I think that's the impression EVERYONE got, especially when a lot of our little information on templars is learned from someone like Alistair.
I spent a lot of time trying to gather as much in-game information about templars as I could, but again--it feels like one of those topics they just sort of set to the side and never fully elaborated on, and all of a sudden DA2 pops up with a templar who is married and everyone who even paid a tenth of an attention to what we assumed was unspoken templar "rules", goes WHOAH WHOAH HOLD UP. At least that's what I did.
I think a lot of the information began contradicting itself, and perhaps the explanation they give now and is sort of assumed (the "don't ask, don't tell" policy, which I can see how it works) is just a way of correcting information they didn't think completely through in the first place. I'm not criticizing, but that's my observation anyhow. Like, first they just let it be assumed templars took their vows of celibacy and couldn't marry, then inconsistencies and contradictions popped up in the game that caused players to bring up questions, which they tried to find an answer for without saying it was contradictory. And then the templars-can-marry idea just sort of popped up out of nowhere with DA2, and I find that very out of place. Seriously you'd think they'd mention that sooner, but I guess beggers can't be choosers. Sigh.
I could ramble on for a really, really long time about inconsistencies and things that left a lot to be desired with the mage origin. I like it the most though for that same reason--the vague "suggestive" nature of the story allows the player to create a lot of the backstory to fill in the gaps the game creators forgot to fill. Perhaps they didn't count on so many people digging into the origin, but personally none of the other origins come even a fraction close to the mage origin for me. I adore it so much, for the dynamics and story and of course the Cullen part.
Personally, if they can give Morrigan her own downloadable capaign quest I say Cullen deserves a full expedition because he plays such a large role in a female mage's origin. I find it unfair the really, really important characters from the mage origin were so easily forgotten or fade into the background after only a few little chats. Cullen, Jowan, First Enchanter, all of them. But that's just me being picky, I suppose haha.