Ryan Reynolds and Blake Lively were just "buddies" while filming The Green Lantern together six years ago, but after it wrapped a new and more intimate flame was ignited – while they were on a double date with other people.
"About a year after Green Lantern had come and gone and we were both single we went on a double date – she was on a date with another guy and I was on a date with another girl – and it was like the most awkward date for the respective parties because we were just like fireworks coming across," he told PEOPLE and EW Editorial Director Jess Cagle on SiriusXM's Entertainment Weekly Radio Deadpool special.
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The 39-year-old Deadpool star, who wed Lively, 28, in Sept. 2012, also said the pair shared a platonic friendship before they started dating.
"We were buddies for a long time, which I think is the best way to have a relationship, to start as friends," he said.
When Cagle remarked that Lively is a great friend to have because of her skills in the kitchen, the serial superhero admitted that can be a mixed bag.
"Well, you need to fit into the superhero costume for a little while," he explained with a laugh.
SiriusXM's Entertainment Weekly Radio Deadpool special will air this Friday at 2 p.m. ET on SiriusXM's Entertainment Weekly Radio. Deadpool hits theaters Friday, Feb. 12.