This photo is one Madelyn Cline seems to truly treasure. 

After months of sparking romance rumors, the Outer Banks star, 25, appeared to confirm her relationship with musician Jackson Guthy by posting a sweet snap of the duo to her Instagram Stories on his 27th birthday March 19. The black-and-white picture showed Madelyn smiling alongside Jackson as he sported an In-N-Out Burger hat. She wrote alongside the image, "Happiest of birthdays my love @jacksonguthy."