There was a simple solution here:
Marten: "Hey, Padma. It's been a while." (passive aggressive tone)
Padma: "Yeah, sorry, I've been busy. Packing and stuff."
Marten: "Right." (again, passive aggressive tone)
Padma: "Anyway, are you busy tonight? I'm ... I'm leaving tomorrow, and I'd like to see you one last time."
Marten: "Oh, wait a second, you sound unwell... is something wrong?"
... you know, invest the tiniest bit of human compassion into at least one single thing you say.
I don't mean being treated like this doesn't deserve some kind of cold shoulder. But you don't have to be THAT much of a cold-hearted ice-king the second anything goes against your expectations.
ANY kind of relation is never about "an eye for an eye".
Deliberately answering bad behaviour with bad behaviour is not a good thing for anyone to do; there is always a better way.
IMO, this was uncalled for and he is right to wonder about himself.
Also, if Padma has ANY intention at all to clear this up, she will meet Marten in person. Both of them have passivity-issues (granted, at different times and in different situations) and its time at least one of them breaks through. Not to save whatever it is they found in each other, but to accomplish any growth at all in this situation.
Painful, painful, very painful.

I'm just kinda angry at both of them. °O