“I’m a Celebrity… Get Me Out of Here” got off to a flying start on Monday — but it appears that the reality survival show’s most talked-about stars may already have quit.

Unless it’s another stunt by publicity-savvy Spencer Pratt and Heidi Montag who spent the first episode of the show either playing mind games with their D-list pals in the Costa Rican jungle or wondering how they were going to manage without regular sex for a few weeks.

Celebrity web site TMZ said the recently married pair known as “Speidi” walked (or trekked?) out after Monday night’s broadcast — even before viewers had a chance to vote on who should be thrown off. 

NBC weren’t commenting, perhaps hoping that all the publicity over the villains from “The Hills” would get an even larger audience on Tuesday than the  6.4 million who tuned in for the premiere of the summer jungle adventure, whose contestants also include a surprisingly tough Sanjaya Malakar , the 2006 “American Idol” contestant best known for his hair.

That may be so.  But if  Speidi has really gone — and it’s not just another manufactured stunt to keep viewers glued to the show — will anyone still be watching the remaining celebs eating bugs four nights a week for the next four weeks?