Rose nodded as her brother spoke. He might not think she would learn much about her brother by asking after his relationship, but it gave her a good impression of what his life was like back home. After all, it might not be all there was to know about him, but Hugo wouldn't be in a relationship with anyone, much less Scorpius, if he didn't feel very strongly about the other man. And wherever there were strong feelings, as with any Weasley, that was where his heart would lie.
It wasn't much of a surprise to hear that their father hadn't taken well to the idea. He had something of an ingrained disdain for Draco Malfoy and all things and people related to him, not to mention a rather closed mind when it came to personal differences.
And see, she had learned a lot. Hugo and Scorpius had fallen into the 'old relationship' stage that Rose had of course heard and read about.
"Where do you work? Where do you live? Do you live with Scorpius? Do we see each other often?" Rose figured she would never run out of questions.