Speculation was confirmed a couple weeks later as they were spotted kissing out in New York City while riding around on Citi Bikes.
However, the couple split up seven months later, just before Di Caprio's big awards season in January 2016."This is a really busy time for both of them," a source told us at the time.
This period of courtship is sometimes seen as a precursor to engagement or marriage.
Dating as an institution is a relatively recent phenomenon which has mainly emerged in the last few centuries.
The leaflets are 30 cm (12 in) long and 2 cm (0.79 in) wide.
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The full span of the crown ranges from 6–10 m (20–33 ft).
They are believed to have originated around what is now Iraq, and have been cultivated since ancient times from Mesopotamia to prehistoric Egypt.