Amy Santiago & Petter Quill
Amy was pretty sure that Rosa was responsible for her being signed up for this event, but rather than be angry about it, she decided to make the most of it. Of course she noticed that Sirius was also here and participating, but that didn't bother her too much. She was nearly a decade older than him and knew that there wasn't much potential for any sort of serious relationship between them.
Not that she was really looking for a serious relationship, but she could cut loose and have fun. Really.
"Hi, Peter, I'm Amy," she said, shaking his hand firmly. "What brought you here tonight?"