The duo took to Instagram on Sunday to announce the news of their engagement, reports eonline.com.
"Yes yes yes it will always be yes," Benoist captioned a photograph of Wood kissing her on the cheek, with her engagement ring on full display.
Wood shared the same photograph and wrote: "The happiest."
They both met on the set of TV series "Supergirl", in which Benoist stars as the lead character.
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