“They have been hooking up,” the insider tells Us of the longtime friends, who become close while shooting upcoming movie musical I Saw the Light, in which they play husband and wife.
“It’s casual,” the insider says, adding that the two won’t be rushing into titles anytime soon, but they do make sure to “text when they’re apart.”
And the timing for Hiddleston, 34, couldn’t be more perfect, considering Olsen, 26, called off her engagement to Boyd Holbrook this past January.
“She wants to make a new life for herself,” the source says. “She’s having fun.”
Hiddleston was previously linked to record producer Jane Arthy.