Two interesting things about them: in this continuity they seem to be a couple, or at least very close friends (thus ignoring the series’ finale) and when this Doctor found the other Doctor’s Tardis, it recognized him as not it’s Doctor and refused to open it’s doors for him.
I guess it’s about these scenes:
I don’t remember it breaking them up?
You know, the one that actually happened?
I didn’t even realize they were referencing that meme until now.