John Mayer and Katy Perry are back together after splitting up in July. Mayer and Perry were seen holding hands at Allison Williams’ wedding in Saratoga, Wyoming, Saturday.

According to onlookers, the on/off couple was very sweet as they sat next to each other. “John and Katy looked happy,” the source revealed to People.

The two hitmakers broke up twice this year. They broke up in March 2015 after they reconciled in January.

In July, the two reunited and were even spotted together at A Grateful Dead concert but called it quits later that month. Following their brief breakup, Mayer and Perry were together once again in August, reports said.

Katy Perry and John Mayer ‘back together’ AGAIN http://t.co/S5BWtqCjLh pic.twitter.com/DQg77S4LWl

— Mirror Celeb (@MirrorCeleb) September 20, 2015

At the time, a source revealed: “They’re spending a lot of time at his house talking over their feelings and trying to see if they can make it work.”

Mayer sang at the Girls star nuptial to Ricky Van Veen. Close friends and family attended the intimate, private ceremony in Wyoming.

Perry looked gorgeous and classy in her long petal designed gown. Mayer looked very polished in his suit, tie and shirt. “They held hands and sat next to each other during the wedding ceremony,” the onlooker said. The couple arrived in separate planes.

A source revealed the details of the wedding: “The wedding is being kept so secret that guests are being asked to fly to Denver, where they will be picked up and taken to the location, which is thought to be somewhere in Wyoming.” The guests are flying together for Emmy’s on Sunday, continued the insider.

Tom Hanks officiated the wedding ceremony. Other guests were Williams’ father, Lena Dunham, Zosia Mamet, Jemima Kirke, Bruce Springsteen, Andy Cohen and Bee Shaffer.