Haynes got engaged to his Jeff Leatham in March


Colton Haynes‘ wedding planning is well under way, and he’s spilling details about the upcoming day with PEOPLE!

In March, the former Teen Wolf star announced his engagement to celebrity florist Jeff Leatham on Instagram. And to help with the proposal, Leatham enlisted the only and only Cher to assist!

“We were watching Steel Magnolias on the big screen on the beach with candles,” Haynes, 28, told People Now said about the moment when Leatham proposed at Las Ventanas al Paraiso in Cabo San Lucas, Mexico. “Then Cher popped up and I was like What is Cher doing? … and then she sang ‘I Got You Babe’ and said, ‘You know what to do now.’ ”

RELATED VIDEO: ‘I SAID YES’: Teen Wolf’s Colton Haynes Is Engaged to Jeff Leatham

“I was so confused. And he couldn’t get the ring out of his pocket, so they kept playing it over and over,” he continued. “Then it happened and then fireworks went off and it was amazing.”

As for their upcoming wedding, it will be a black and white theme with lots of flowers — but they’ll only have one specific kind and color.

“It’s already planned. It’s going to be insane,” Haynes said about the couple’s wedding day.

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“It’s going to be somewhere in California and then it’ll be this year,” he said. “Red roses. Only red roses.”

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