Nina holds a cocktail while Shaun chooses a refreshing coconut drink.
The couple strikes a saucy pose on the beach.
Nina poses for a pic before heading on a bike ride around the island.
Nina blows a kiss to the camera as she shows off her rockin' bikini body.
Shaun lays a kiss on his girlfriend as they lounge by the ocean.
Shaun looks ready to catch some waves.
The athlete noshed on snacks with his toes in the sand.
The couple is ready to snorkel the crystal blue waters.
Nina captioned this Instagram post, "schedule for the next week: eat. sleep. burn. apply aloe. repeat."
Nina snacks on a salad by the ocean.
The couple hopped on jet-skis during their vacay.
Shaun snaps a selfie while riding around with Nina on a jet-ski.
The couple take a romantic stroll on the beach.
"They are genuinely so in love and are so cute together," a source exclusively told E! News back in December. "It's very sweet."