I’m glad you asked!
The main focus of the game will be on the adventure aspect of the story, but in Act 2 there will be 3 established ships between major characters, not involving the protagonist however.

One that is hidden and will require you to keep a sharp eye open to spot it.
One that is relatively obvious but in no way plot relevant.
And one that is important to the plot in a way.

There is also going to be couples amongst the NPCs you meet, like an elderly married couple in a village, or something along those lines. There is definitely going to be one NPC couple that pops up in a quest. There may be more in other, minor quests that haven’t been written yet, though.

TL;DR: You will not be able to date anyone, but there are some of the characters you meet that are already in established relationships.