John Mayer might be one of the biggest playboys in the entertainment world, but it looks like he just can't get over the one who got away--and that would be Katy Perry, of course. There's a new report that says the former chart topper is completely jealous of Perry's new relationship with Hollywood hunk Orlando Bloom.

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And while Perry and Bloom have not made any comments about their personal lives just yet, the couple were spotted walking hand-in-hand during a romantic stroll in Hawaii recently. Apparently, Mayer is none too happy about it, too.

According to Naughty Gossip on Tuesday, sources close to the singer say that not only is Mayer "totally jealous" about Bloom, but that he always wants what he can't have.

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"This is typical John. When Katy was single and begging him to get back together he ignored her," one source told the site.

"Now that he cannot have her he wants her. He also wants all this publicity that the new couple is getting. John is a animal when it comes to attention. He loves being gossiped about and on the magazine covers. He only gets attention when he is dating someone famous. When hew is single, no one cares about sad John."

What's more, the insider says that Mayer has been texting Perry non-stop asking her for a second chance, but she's not responding as she's clearly moved on.

Keep up with Enstars for all the latest news on Katy Perry, John Mayer and all of your favorite celebrities right here.

Tags: Katy Perry