His temper ... at times it fits Kahvi ... or any Go-Back.
The flashback pictures together with the line "From the very beginning ... rejection ... abandonment!" seems to prove that he was left by Kahvi, by his mother, at a very young age. Even when I don't like this idea too much ... it's hinted even clearer that Teir might be Kahvi's fawn.
I don't mind his emotional reaction on the braids ... looks for me like an early childhood trauma unearthed by scent. Hm... maybe this has to do with his desperate wish for an own child?
His strange seduction scene on the other hand ...
Wouldn't judge on drama queen or not from these few scenes, tho. Just let the story and motivations show a bit more .