X17Online posted photos on Saturday (Feb. 15) of Katy Perry and John Mayer out for Valentine's Day with the "Roar" singer sporting a suspicious piece of jewelry: a gold ring worn on her wedding finger.

The 29-year-old fueled rumors that she and Mayer were ready to tie the knot as they headed to dinner at Sunset Tours Hotel in Los Angeles.

Back in November, a source told E! News that engagement was " inevitable" for the "very serious couple."

Another source told E! that Mayer has yet to pop the question, despite Perry's new accessory.