He shakes his head - no. No, that would be a terrible idea. He doesn't want to sleep in that bed tonight, surrounded in her scent, knowing fully well she won't be there when he wakes up in the morning.
"'m not going back there."
He straightens up a little, wobbily, reluctantly withdrawing from all that comfort and pheromones. It'd be nice to stay like this but Ianto is still in the dome and there are rules and he can't promise he won't do something horrendously stupid tonight simply because he can.
"It's fine out here. Not the first time I've slept in a graveyard."