How did you choose your love interest? [SPOILERS ALL]

Prior to playing the series for the first time, I decided that I would romance Morrigan, Merrill, and Josephine. Mostly a blind choice but did watch parts of some videos. Also, I only romance female characters in games. In Origins, I romanced Morrigan. In 2, while playing, I decided against romancing Merrill and romanced Isabela instead. In Inquisition, I romanced Josie.

Whenever I replay a game, Dragon Age or otherwise, I always make the exact same choices, even down to my dialogue choices (I always get a feeling in the back of my head and have to reload a save if I don't choose the same one).

Also, how would you rank the romances that you have done?
Mine:

  1. Morrigan
  2. Josephine
  3. Isabela