I love the character for the most part. She's adorable (sometimes its a bit too much but still).
So I went for a romance and I felt skeevy. I think its her petite elvish body combined with her innocence and cuteness. It doesn't feel like you're romancing a woman, if you follow. Especially brought home with the way she says "I love you" in bed. Very awkward.
Is it just me?
I did not feel particularly skeevy, no. I've never romanced her with a male character, so I can't say if that is more or less uncomfortable. As awkward adult myself, awkwardness is not particularly discomfiting, nor a red flag of youth to me. Some people just don't pick up on all the social cues for every situation. And she is smart and talented in her own way (she is pretty much the only source of Dalish history and artifacts in the game). That said, I greatly preferred the rival romance, where she stands up for herself and makes decisive choices. It feels more equitable for her and more reasonable from the main character's perspective.
I guess I can see where you are coming from on her petite build, but I never felt like I was looking at a teenager. For that matter, I never really thought about it at all until reading some of the comments on this forum, and I highly doubt that was the developers intent. More likely its an unintended consequence of elves having generally petite character models and more extreme features (eyes, ears, ect.)