Love certainly comes in many forms. One is no more different or "pure"er than another. If English is not your first language, in the anglosphere, "pure" has often used by religious (mostly Christian) reactionaries and fundamentalists to attack non-cisgender-heterosexual relationships as "sinful", so you can see why some would get very apprehensive about it. The same people that don't care that you're an "ordinary gay man" - they view any non-patriarchal/heterosexual relationship as sinful. So forgive me for getting apprehensive about such language because its language queers have had subjected to for centuries.
Also, if you don't like the Torulf arc, don't go down that route. That route specifically is meant to tell a story about the hardships and emotional challenges of dealing with a relationship partner who only values and wants sex. It certainly is not my favourite route (mine are the Lake and Jorgen routes), but I still enjoy playing it. There are other routes to read and enjoy. That's the beauty and joy of Dawn Chorus - you get multiple story options to explore and enjoy.