John snuggles her back, rolling things over in his head. He's excited and elated (and turned on) but still worried and maybe scared (and feeling like there's so much he has to do right now, which is what he wanted but it still feels like a burden even though it shouldn't and he should stop feeling like that). Rosy is a comforting presence, though, and this helps with at least some of his more concerned thoughts. But the weight of what they just did (making her his slave) is really hitting him now, both in the hot ways (she's his and he can make her do anything he wants, and she's really into it and wants him to) but mostly not so hot ones (he's responsible for her now, he can't do anything wrong, he can't hurt her (except in ways she wants to be hurt, and there are quite a few of those~), he can't take advantage of her, and he needs to make sure his orders aren't accidentally bad or anything like that). It's a lot to think about and deal with. He keeps trying to think about the positives (and Rosy being a comforting presence is helping), but his mind keeps wandering back to how he messed up remembering the exit phrase (and even said it wrong!) and how he can't mess up like that now that he has power over her.
And plus, he really feels like he should be doing something with her, but he isn't sure what. She seems content enough, snuggling him cozily, head resting against or on him (depending on how they occasionally reposition), but it still feels like he's wasting her time (and his, though that's less important) with doing nothing instead of doing something hot and fun. (Plus something hot and fun would take his mind off of all these things he doesn't want to be dwelling on at the moment.) But he can't think of anything to do, and he isn't feeling it (at least partly because of all the complicated thoughts in his head), despite the fact that he's literally snuggled up with a hot girl who is actually his mind controlled slave that he can do whatever he wants to (except he can't, because it matters what he does to her now, because she can't stop him). He finds himself wishing he could read the rest of his book (or play a game on his phone, even, though he's spent enough time looking at his phone screen today already and it would be bad to do the easy thing like that) as a distraction, but he can't just abandon Rosy like that when he should be doing things with her (he can, of course, but he really shouldn't that's the point), so there's little to do but keep snuggling her and clinging to her for the positive feelings she brings. And try and think of something good to do.