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However Tom has not posted about the beauty in almost a year, indicating the romance had fizzled out, and the pair have reportedly unfollowed each other on Instagram.
While Ella's romantic status is not known, she was most recently linked to her co-star in the Tim Burton flick Asa Butterfield - after she admitted to Schon magazine that her chemistry screen test with the actor had been a 'breeze'.
Having first played the role in the Captain America franchise, Tom is also currently filming the next 2018 installment, entitled Avengers: Infinity War.
Meanwhile Ella's career also seems to be going from strength to strength, having starred in the Tim Burton blockbuster Miss Peregrine's Home for Peculiar Children alongside Eva Green, Chris O'Dowd and Rupert Everett last year.