"Are you okay? Because you don't...really seem okay, if I might be so bold to say so. You want some tea?"

Because plenty of people always seemed to find it calming. Mostly he was more of a juice guy himself, but really, if it helped...

"I'm Xander, I don't think we actually met before you left, but still. Nice to meet you? Welcome back, I guess? Though I'm not sure most people would be happy to be back here..."

But he shrugged, then. He didn't want to chatter too much, but it was fairly clear he could fill the silence, if it was necessary.