Very nice.

Now, as for my take on this, I don't see how they can be married. The problem is this line:
Quote
and once again this year she found herself alone in her small apartment,
If Lois is in her "small apartment" then they aren't married yet.

So, this could be:
1. A replay of S2 Christmas where things go a bit differently and Lois has figured things out. This is her very low-stress way of telling Clark what she knows.
2. A reply of S3 where there were no parents or Kryptonian viruses. As suggested above, perhaps Clark was called away after they were supposed to spend Christmas together.
3. An alt-verse where they broke up after Lois learning the secret so Lois is still in her apartment. This could be the first step in a reconciliation.

Idea '1' is how this hit me but who knows...

Bob