Sirius / Remus dranks.
It was a place like this that really made The Thing more of a Thing than it'd been back home -- at least for Sirius. Oh, sure, it'd always been there, sometimes right in their faces and sometimes calm and below the surface of things. But the very idea that there was some time for the both of them where things went to shit, where they would be without family and each other because of their own bad decisions? Well. It had Sirius thinking a bit more about it than he might have usually.
About what could be, and how things could be better between them. About how the very concept of being without Remus made him want to find a dark hole to crawl into and cry over. Certainly, he was aware that The Thing wasn't a magical fix all to things like lying and hiding truths. But -- he knew them both well enough to know how their own levels of commitment worked.
Plus Remus just looked bloody fucking good when he walked off to get drinks, and even better when he came back. "To us," he decided boldly, holding up the cup that he was pretty sure was meant for tea and not drinks, but fit liquid in just fine anyway.