Yes, it will. We haven't even finished conquering the first of the Six Realms, so there are a lot of opportunities for the character/relationship growth.
The real question is "How long before YCH#1 and YCH#2 receive more screentime?", and that one is tricky.
If both YCH#1 and YCH#2 are the main characters (such as Rowan, Alexia, Jezera and Andras) then the wait won't be long.
If one of YCH's is secondary (such as, say, the Castle Staff/Fey Ambassadors), then you'll probably have to wait for a while, especially if the YCH isn't very popular (poor unfortunate Shaya) or the Devs are working on the big and important feature like Rastedel. And since there are a lot of possible pairings, the best advise I could give you is to go on Patreon and vote for the couple of your preference. Otherwise, be patient with this one.
If both of them are secondary, then... well...
*presses F*