Are Katy Perry and John Mayer together again? The on-off couple has been seen holding hands at Allison Williams and Ricky Van Veen's wedding over the weekend, and rumors started circulating that the couple has reunited. 

In photos posted by the Daily Mail, the "Teenage Dream" singer and the "Daughters" hitmaker are seen sitting side by side, with their clasped hands resting lightly on Mayer's lap. Both were dressed for the occasion, with Perry garbed in a printed dress with long sleeves while Mayer donned a dark suit and tie and dark eyeglasses for the outdoor ceremony held at Bush Creek Ranch in Saratoga, Wyoming. 

The Daily Mail reports that the two arrived separately at the Wyoming ceremony and that the only time they left each other's side was when they performed individually to serenade Williams and Van Veen. 

A source from People Magazine said that the two looked "happy" as they held hands and sat next to each other during the wedding ceremony. 

Mayer and Perry were reported to have gotten back together in January when they were spotted heading to a mutual friend's dinner party. They reportedly broke up again in March, but appeared to have reunited in July as they were seen in Disneyland and photographed being affectionate with each other at a Grateful Dead concert. The following month, it was reported that the two have split again, allegedly due to "busy schedules and trust issues." 

Meanwhile, another source told People that the two are not back together and that they have both agreed to attend the wedding because they are both friends with the bride and groom. 

"It was an emotional wedding, and they held hands but only because they will always care about each other," the insider told the magazine. "They were happy to see each other and spend time together at the wedding, but they are not a couple."