The duo was all smiles throughout the game and at one point Prince Harry was pictured leaning in and closely to talk to Markle.
Observers noted their casual affection, holding hands and standing speaking to those around them as a couple.
Others praised the actress’s natural approach to her first informal public appearance with the Prince, as she charmed members of the public with ease. The couple were not shy of physical contact, and as they left the court, Markle stroked the Prince's arm.
After their public appearance, rumour has it that the relationship is heading in one direction: an engagement announcement in the weeks to come.
While the pair have managed to keep a low-profile since their romance blossomed last summer, they have been photographed together on several occasions since then. First, at a wedding in Jamaica and then again at the Audi Polo Challenge in May. Additionally, earlier this month, Meghan revealed the two "are really happy and in love."