There's no hiding their relationship any longer!

While fans have been speculating since May that Fantastic Four costars Kate Mara and Jamie Bell are an item, the duo seemingly confirmed they're dating on Thursday when they kissed and walked arm-in-arm in NYC's Soho neighborhood.

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Jamie has been single since separating from wife Evan Rachel Wood in May of 2014, less than a year after the birth of their son. Kate also split from boyfriend of four years, Max Minghella, in 2014.

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Earlier this year, Jamie confessed to Elle magazine that he's "terrible with girls" (though that's CLEARLY not true).

"I have been in numerous situations where I've been lying in bed with a girl and we're just talking and I'm sure in their minds they're thinking, 'Will you just f–king kiss me? Will you do something?' I guess that is an English thing — to not be as forward or as aggressive," he said.

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Well, he's clearly charmed Kate!