Frank Micelotta/PictureGroupIt looks like Katy Perry and John Mayer really are an item.  After being spotted last week on a dinner date, People magazine reports that the two attended a party together over the weekend at the home of a Hollywood talent agent. 

According to People, the couple were especially taken with the bash's special guests: an alligator and a kangaroo, which had been brought in from an animal conservation organization. "They were really cute," a witness tells People, meaning Katy and John. "They were standing near each other most of the night, playing with the animals outside."  

The two "definitely enjoyed each other's company," added the witness, saying, "They almost acted like they've been a couple for a long time. It definitely didn't seem like a new relationship."

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