Rose couldn't help the tiny giggle that escaped. It was a serious sort of situation in plenty of ways but also? Well, also it was being insanely in love with possibly the biggest git in the universe who, it seemed, might actually love her, too. And there he was asking, rather than just taking, and who did that? He did. Which made it more than enough for her.
"You know," she pointed out, moving her finger away so she could cup his cheek with one hand, "if you're feeling so poorly, you really should be resting. I should go. Let you get some sleep and all." But she wasn't going anywhere. Not then, not ever. Oh, she'd see that he got some rest, but it would be with her there, keeping watch. And, as she'd decided already she wouldn't deny him anything, she smiled and leaned in that much closer. "All you've ever had to do was say so."
It wasn't the desperate, passionate kiss of hearing words she'd been aching to hear for so long. It was soft, tender, and exploring, with the knowledge that she had time to try it other ways, too. It was the sweetness of first kisses and lost loves found again. His previous self had kissed her, though she only had fuzzy memories of it. And Cassandra had done so while in her body, but again, only fuzzy memories. And she'd been perfectly conscious to kiss the half-human version. But this was the first time that it truly felt real. The Doctor and Rose Tyler.