Madelyn Cline can’t keep her lips off Prince Constantine-Alexios of Greece and Denmark.

The new couple was seen packing on the PDA — again — in a steamy new snap.

Deuxmoi posted the photo in question via Instagram Sunday, captioning it, “💋 The People’s Princes.”

The image was a close-up shot of Cline, 27, and Constantine-Alexios, 26, making out in a crowded space.

The two appeared deep in the moment, paying no mind to the various people around them — one of whom even photobombed.

The actress wore her dirty-blond hair down and held back with a thick black headband, while the royal was dressed in a light gray T-shirt.

To make the kiss more passionate, Cline had her hand around Constantine-Alexios’ neck.

The pair’s budding new romance first made headlines last week after Deuxmoi obt

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