But it's not going to picked up again. And the Doctor is over 900 years old. He's been married before. I'm sure he'll be married half a dozen more times before he dies, not to mention all the relationships he'll have that don't end in tying the knot. With Captain Jack, he's previously made fun of the 21st century OTP forever concept.

The Doctor's wife closes off no avenues and she won't be important to the narrative. That's the whole point because you'd think she'd be all important as his wife, but because of how they've met, she's just not.