John Mayer and Katy Perry are “definitely dating”

A week ago John Mayer and Katy Perry were spotted leaving the Chateau Marmont together after a date. Now, sources are saying the couple are definitely dating. The two were reportedly inseparable all weekend, attending a house party and then a pool party together.

Saturdays wild bash, held at agent Michael Kives apartment and also attended by Arnold Schwarzenegger and Jessica Chastain, among others, was quite the Hollywood scene exotic animals, including an alligator, lemurs and raccoons, were rented for the party and situated throughout the apartment. Katy and John arrived around 8:30 p.m. and stayed close the entire night.

They were standing on the terrace on the ground level and petting all the exotic animals, a partygoer tellsLife & Style. Katy loved the lemur and was... [via ICYDK]