Loki had mixed feelings on the subject of buying her a drink. On one on hand, she was blonde, quite attractive and not from his own pantheon. On the other hand, he didn't know who this goddess was and he was behaving. Relatively speaking. He'd been doing better than he had in years past when he'd made resolutions to... behave.
He could be friendly without it going anywhere, right? Even though the cut of the dress made her breasts look quite amazing.
It was complicated now. Many, many, years ago, Loki would try to be charming and funny with the goal of getting her mostly if not completely naked. But right now, now he didn't want to offend this goddess and risk getting his ass kicked, but he not about to find a dark corner for sordid activities either. "Yeah," he said in his very best interpretation of Robert Downey Jr. "I suppose that would be alright. What would you like?"