Flameout for Mayer's New Girl?

Is it true that John Mayer has dumped new gal pal Scheana Marie for running her mouth to the press about their relationship?

Let's hope the "Jonas" actress didn't get too "Comfortable" in John's life -- this rumor is reportedly true! According to the NY Daily News, John was annoyed that Scheana decided to spill the beans to the media about their "friendship."

During a Catch Boutique Launch event in L.A., Marie reportedly told a friend she's "quite nervous that John hasn't texted or called." A source close to the former model tells the paper that Scheana revealed "too much to the media and she may have screwed up something with a great guy." The pal adds, "She's especially nervous because her birthday is next week and she hopes John will be her date."

Marie is reportedly worried and "just wants to make sure John knows that she really cares about him and is not using this media attention to further her career."

A source close to Mayer says the singer isn't stressing about Marie's comments -- because the two are no longer in contact. "Scheana's delusional," John's pal revealed. "John's laughed off all of this."