Katy Perry and John Mayer spotted "cozying" up with each other at a wedding

The on-and-off again couple, Katy Perry and John Mayer, were spotted displaying PDA during the wedding of "Girls" star and friend, Allison Williams, last weekend.

The two celebrities first sparked the speculation of being back together when they were seen cuddling with each other during the wedding ceremony while seated with other guests. "They held hands and sat next to each other during the wedding ceremony." The couple were seen "cozying" up, while watching the bride, who wore an Oscar Dela Renta handmade couture gown, walk down the aisle. People said that an insider told them that Katy and John "looked happy."

A source told E! and confirmed that the "Fireworks" hitmaker and "Your Body Is a Wonderland" singer are back in each other's arms. The last time the two were together (and broke up) was around mid-July. Before that, they also were together February last year. Fans are getting a hard time keeping up with the two because of their on-again and off-again relationship.

However, another source told People that the two are not an "item" again. "They had both agreed to attend the wedding because they are dear friends with the bride and groom, but they are not back together. It was an emotional wedding, and they held hands but only because they will always care about each other," the source explained.

The source also added that the two are mature enough to be gracious with each other. Katy and John were just happy to see and spend some time together at the wedding because even if they were exes, they are still dear friends.

Meanwhile, other celebrities seen with Katy and John at the wedding in Wyoming were Andy Cohen, Lena Dunham, Bruce Springsteen, and Tom Hanks and wife Rita Wilson. The bride's co-star Jemima Kirke was also in attendance.