Draco's lips drew into a tight line, though. He did not joke about what he or Astoria were to each other, and he didn't like it when others did - even if the joke was offhand and mostly at his expense. He also didn't like people implying things that seemed, remotely, vulgar. Unless he was the one doing it.
Honestly, he was a little touchy on the subject.
"Yes, well." He said, effectively ending that conversation and taking a drink of his brandy.