The romances is pretty organic. If you talk to a character more cause you like their character then you'll more likely develop a relationship with them. But it depends on what you say or what your beliefs are. If they are more gung ho revenge and you're not that way, it wont work. They wont like your responses and the relationship wont go far.

What's great is whatever you do in DA1 affects DA:A then that all kinda affects DA2, it's not a dramatic affect but you'll see things mentioned that your previous character did. You'll see some characters carried over too, some will be involved others just make cameos. It's pretty nifty.

The story is really interesting. if you like classic fantasy, you'll love it.

The first one, story wise, was better. The second one combat wise, was better. You'll enjoy them both