"Sure it is, I suppose. If we both wanted to just because we wanted to." But it sounded to him like she wanted it because it was easier for a future that may not happen, not because she wanted to marry him.
And anyway, the point was moot. They couldn't get married. Things were a lot more complicated than just they wanted to or didn't want to or didn't know what they wanted.
"But it's nothing more than a piece of paper and a party, isn't it? It doesn't really change anything."