There's a new bromance brewing between newly single John "Pretty Boy" Mayer and Pete "The Emo Kid" Wentz!

Not only have they been seen out and about together but these cats are swingin' ring -a- ding kinda guys - both linked to a Simpson sister!

John dated Jessica and Pete married Ashlee.

So how do these two express their budding bromance?

By bloggin'  -- natch!

"John Mayer is one of my favorite dudes," The Emo Kid enthused.

"Crush request accepted," Mayer gushed back.

Ain't love grand!