Remus' favorite part of the day is coming home from wherever he's been, because she's always there to receive him with open arms. He loves that feeling, the feeling of someone holding him, actually happy to see him cross the threshold of their home. Especially when he's been gone, working for the Order underground and it's been near a month since she's seen him last.
Nymphadora's arms, no matter what shape, length or size they are, are always open for him. They are loving and warm, and more importantly, comforting. After a long time away, he knows that he can look at her wordlessly and she knows that he just wants to be held and told he's not like the beasts he has just been with, that he is more human than any of them and that she doesn't fear him.
She's already told him this in so many words; over and over again, that's how she was able to convince him he deserved to be loved and that he could love her. Now, now that they've been together there's no need for her to speak anymore on this subject. He will walk through that door, collapse tiredly on their bed and be reassured of those very things by the vocal embrace of her arms.
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Sorry this one's shorter than the rest, but I couldn't think of anything else, and I think that that got the point across :D