In the real world, Minthara's whiplash change of perspective towards the player would be a huge red flag, coming off as a potentially psychotic attachment issue.
In a fantasy world, it's a little too wish fulfillment-esque. All of them, except perhaps Shadowheart, are. The stakes of a romantic sub-plot should rise with, and hinge upon, the climax of the main plot. I'm hoping Larian made these romance chains abbreviated for the EA and that they will stretch across the length of the game, once complete.
