Ohh, a bit of gossip just heard in the main hall from the Orlesian nobles!
Something along the lines of 'So we are reaching our climax' then 'Well, we're not the only ones.' They then went on to discuss dresses being sewn in Val Royeaux in preparation, and other such details.
Is that who I think it's about? 
If anyone has heard this before, and can remember more than me, then that would be very much appreciated aha.
Yes they ARE talking about your romance with Cullen.
After you kiss for the first time.
Female Noble: Would you have ever guessed such a parring?
Male Noble: Oh yes, the lure of command....
After you sleep together:
Female Noble: We've reached the climax.
Male Noble: We're not the only ones!
Female Noble: Your awful!
Male Noble: They'll be sewing in Val R. even now.
Later on in the game
Male Noble: Has there been an exchange?
Female Noble: Of a sort.
Male Noble: Not that! Gifts? Betrothals?
They also will discuss what to wear IF a wedding does take place between your Inquisitor and Cullen. Then the Male Noble will say, "Careful, you'll distract from the happy couple."