I had a similar experience in Origins (though I stupidly rented that title and sent it back in a rush of frustration -- it's been too long to go back...) I originally actively tried to have a gay thing with all the guys in my party. I flirted with everyone really, but I wanted to see how they would handle gay relationships. Especially if it was with Sten. Ultimately it was only that one elf who responded to me, but then... well, when we were getting to the point that it was going to be a romance between us, I started having doubts about his intentions. He was into me, but it seemed like it was all about sex; just a bit of sport he had with other guys. Eventually, I found myself falling for Morrigan. She was smart and callous, but every once in a while you could get a peek through the clouds and see a girl that just wanted some company and love after being isolated, demonized, and kept under the watchful eye of her odd mother for her whole life. I never got to see the romance through to fruition, but I sure as hell wanted to.
Ultimately I found my interactions with my party members to be fulfilling and my emotional attachments to them sincere. My friendship with Alistair, my affection for Morrigan, my contempt for Sten, my theological disagreements with Liliana (which I had eventually gave up as absurd -- I was projecting my IRL atheism into a world where I can walk up and talk to Gods and shoot lighting out of my hands and shit), and my boyish contentment with my warhound all felt authentic. It was rewarding just to walk around camp.
Shame I ate dicks so hard in combat. I might have finished if I could walk ten steps without getting myself killed.