Honestly isn't Aquila too good for her? I'm sure some Lamias probably were great but the current doesn't seem worth the problems... he's basically cursed to have to remember and no being able to move on from her when she in the other hand can live happily and do whatever she wants. Can we really call romance when is so obviously unbalanced?
She's a shitty knight and people are gushing over Uri but he's the one who was born to use a sword and can't even match faces and names properly... no matter how I look at it, she still too egocentric for me to actually like her, but I'm curious about Ethan, he seems like a good character taking from the bits we know.