Leliana Dialogue Bug

I have just recently come across what appears to be a bug with Leliana, in which engaging her in conversation results in her inquiring about my Warden's marriage to Anora. The problem is this dialogue is intended for a Warden who is in a romance with Leliana, which I am not. I am in fact in a romance with Morrigan, which seems to still be intact after this dialogue with Leliana thankfully.

Ultimately my question is whether or not this is a common problem with the game, and if so how damaging could it be to the game's plot flags. At the moment my Warden has yet to go through with the Landsmeet, and I have been extremely careful as to avoid all dialogue with Leliana that leads into a romance, which is why I am so certain this is just a bug.

Thanks to anyone who can help me out with this! :D