John Mayer and Katy Perry: Sooooo Hitting It

Music stars Katy Perry and John Mayer, who've been spending quite a bit of time together lately, were spotted out and about again this weekend.

This time, they were leaving a house party in Los Feliz on Saturday.

The pair, who has kept mum on whether or not they're dating, got into the same car upon exiting the shindig. You know what that means, people.

That they're reducing their carbon footprint. And maybe having sex.

Earlier in the week, she was seen being dropped off after spending the night at his house, and it's not the first time for the possible lovebirds.

A source told E! recently that Katy Perry and John Mayer have been "laying low" at the latter's home, hanging out and having "sleepovers" together.

Wrong. Just wrong.