John Mayer a-Twitter about ring shopping

LOS ANGELES - John Mayer may be planning a proposal to girlfriend Jennifer Aniston if the serial joker is playing things straight on his Twitter account.

The close-lipped couple have kept their relationship quiet recently, but the musician took to his Twitter page to suggest he may have bought a ring.

“Visiting the Diamond Exchange in Tustin,” he wrote on Friday, following it up Saturday with, “Welding an engagement ring for my girlfriend.”

While the articulate and often-acerbic singer may have made a typo on the first word (he may have meant “wielding”), there’s no mistaking “engagement ring.” But, it remains to be seen if the jokester celeb is serious.

In an interview with GQ magazine at the end of 2008, Aniston hinted that her on-again beau, Mayer, who famously spoke out to the paparazzi after a break up with Aniston earlier in the year, was done talking about their relationship in the media.

When the reporter suggested that Mayer tends to be self-aware in his blogs, telling Aniston, “so you see him blogging,” the actress quickly chimed in. “Not lately, have you?” she asked, referring to Mayer backing off his semi-regular Internet postings.

“Uh, no,” the GQ reporter replied. “Not recently, Why?”

“Just… things change,” Aniston noted.

If they are getting engaged, it could happen soon — Star reported on Friday that Mayer is planning to propose on February 11, Aniston’s 40th birthday.

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