Speculation that they may be engaged has now been sparked after Ceretti was seen with a new ring on her left hand.

Ceretti, 25, proudly showed off the ring while joining DiCaprio, 49, for a low-key lunch at Mexican restaurant Yuca's in Los Angeles on Tuesday.

The star of "The Wolf of Wall Street" was dressed in a plain white T-shirt and shorts and was, for sure, trying to keep incognito under a black LA Dodgers baseball cap, which is always paired with a face mask. On the other hand, Ceretti was chic in belted low-rise, baggy jeans with a cropped sweater in black and white over a white tank. Some braided pigtails completed her look with futuristic black Balenciaga shades.

Although the couple did show some rare public display of affection—with sweet things like DiCaprio feeding Ceretti from a burrito—it was the silver ring on the finger of Ceretti that caught attention.

Whether or not the ring is to serve its purpose as an engagement ring is yet to be determined, but the latest Instagram posts of the Vogue covergirl do not include it.

Rumors of a potential relationship between the two have been circulating since the summer. Several instances caught them together, including a passionate dance in Ibiza, Spain. Since then, people have regularly seen the two together and they have even spent time with each other's families.

The two were, at some point, rumored to have broken up after DiCaprio flirted with Teyana Taylor at a pre-Oscars party. But their lunch date seemed to express otherwise and confirmed they were still together.