Signs are serious business.
I have to admit that the whole rape thing just annoys me about this pairing.[Nana spoilers]. Now, I'm only up to volume 13, and I do like the fact that their relationship is outrageously dysfunctional, but many men have bad childhoods- childhoods filled with every sort of horror- and don't go out and rape their girlfriends! *feminist SMASH!!!*
ETA: Nana may be trying to put a brave face on the fact that it was on fire when she lay down on it, but that doesn't excuse Takumi's behavior!