Eric Christian Olsen is a low-key guy, so it makes sense that he was taken aback by the outpouring of emotion from his friends at his June 23 nuptials with Sarah Wright.
"A lot of my buddies were crying," the NCIS: Los Angeles star, 35, recently told PEOPLE with a surprised look on his face at the Television Critics Association summer tour in Beverly Hills. "I was like, 'What is going on here?' "
But as his small-screen costar Daniela Ruah puts it, "It was so wonderful. It was really, really wonderful, and 100 percent personal. And their vows were just, oh, to die for."
Aside from the mushy-gushy stuff, Ruah says it was their fellow cast mates Renée Felice Smith and Barrett Foa who also made the wedding an event to remember.
"They started square dancing," she explains. "And then all-of-a-sudden all of the guests at the wedding were on the dance floor square dancing to a bluegrass band that [Eric] had. It was so good. It was so, so fun."
"It was warm," Ruah recalls. "We all had spicy margaritas. I loved it. I genuinely loved [Eric's] wedding."
The new season of NCIS: Los Angeles begins Sept. 20 on CBS.