Harry was completely unsure of what was going on between Ron and Hermione, but he figured they would work it out eventually. They always did. He didn't think it had been anything in regards to him. If it had been, surely they would have said something.
When Ron asked if he wanted to grab a table, he shrugged. The place was filling up fast. It might be a good idea to grab a seat. "Uh, yeah. Just get me turkey and swiss." he responded, handing Ron some Muggle money as he moved by them to get them all a table. He normally had both muggle and wizarding funds on him. He was no stranger to the Muggle spots in the area. Besides, if something happened it would be good to be able to get around in both of the two worlds.