A week after Rob moved his things from his ex, Kristen Stewart, the actor showed up at the event alongside Katy Perry on Saturday.
The two were reportedly sitting in the middle of the audience, talking and watching the wedding procession.
“Katy and Rob were just sitting next to each other watching the wedding rehearsal in the main courtyard area,” rehearsal guest Stephanie Sands told People.
“They were dressed very casually. She was wearing a hoodie and big sunglasses. There was no PDA between them and no body language that showed they were dating. They just sat together and watched,” Sands added.
Their arrival at the ceremony caused the surprise of the guests.
“It was extra exciting for Tanya and John,” a relative told the magazine. “They were just sitting quietly and talking, and we were on the lawn nearby. We respected their privacy.”