Paris Hilton loves making out - with men, women, pets, whatever.

Slicked back Jared Leto (Lindsay Lohan's ex) exchanged saliva with socialite Pink Paris "Pussy Power" Hilton at Sundance in Utah. (PICS)

Paris shows off her Big Rock.

Jared Leto at the 2008 Sundance Film Festival, Day 5 in Park City, Utah (01/21/08).

Is that a man bag scarf or what?

And guess what? THis isn't the first time horny Paris has hooked up with Leto man.

A source tells Page6: "Paris and Jared are not dating seriously, but this is not the first time they have made out — there just weren't any cameras around before.

"She likes him and she thinks he is really sexy and fun," the source says, but Paris has told PageSix.com in the past, "I don't want a boyfriend right now, I travel too much and don't have time for a relationship."