March 19, 2014 08:15 PM

After a dark year, the future for the many cast members of Glee is looking quite bright – white to be precise!

On the heels of Dot Marie Jones’s December nuptials, three other weddings are in the works for her Glee costars.

“Everybody is involved. Even [my publicist] is involved,” Naya Rivera, 27, tells PEOPLE of being “very deep” into the planning of her walk down the aisle with rapper Big Sean.

And although Melissa Benoist, 25, and her former on-screen and current real-life love interest Blake Jenner, 21, keep busy on the set of their Fox show, the actress says the two are planning their “really simple and intimate” ceremony “when we can.”

Harry Shum, Jr., 31, is also getting involved in the planning of his big day with Shelby Rabara.

“I would say that I’m not, but I am,” Shum, Jr. says. “I’m like ‘No, no. Have it but maybe do that?’ ”

But one thing the professional dancer is certain about is how being engaged to Rabara has taken their relationship to the next level.

“As a dude I thought I would be like, ‘It’s more for her.’ But it was for me, too. I’m super happy,” he says. “You feel this different air between you. I guess it is that commitment that changes from a boyfriend-girlfriend commitment. I didn’t realize it would change until I did it.”

Related Video: Harry Shum, Jr. Reveals His Sexiest Quality

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