Even without a romance, he was always going to be this way. They wanted a token bland.
a few pages ago sosiel looked at a gnome and fell in love with them, calling them the epitome of beauty, making portraits of them, and having the visage of a goddamn gnome be the one thing that keeps them going in the darkness of the abyss and you think thats bland
they can't all be daeran, the first npc to romance the player and not the other way around, but come on. sosiel is clearly insane
In all seriousness I thought Sosiel offered a good contrast with the rest of the party. As far as romance goes he's the one monogamous guy in a setting of sex-haver demigod fantasies. Beyond that he's just a lad with anger issues who cares about family. He's a way better 'Eder' than Lann turned out to be.