The duo, who broke up about a year ago, have been spotted a couple of times together during the past week or so. Their first meeting (that anybody knows about) was for a dinner in Beverly Hills and at least one report claims that John went back to Katy's house and didn't leave until 4pm the next day.
A few days later, they were reportedly spotted at a Los Angeles Four Seasons hotel and now, they've just met for another dinner date and they weren't shy about showing their affection for each other.
"They seemed very comfortable together and kissed several times," a source told E! News. "It was a cold night and they held hands and John pulled her in close when she got cold."
An insider also tells the site that, "they are definitely back together and seeing where it goes...they have spent almost every night together this week."
Well, that sounds pretty promising to us!
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Gallery | Katy Perry and John Mayer