With her toned figure on show in a tiny white halterneck bikini, the once-curvy Spice Girl showed off her muscles as she cavorted with her aristocratic lover on deck.
Red-headed Geri was a constantly moving ball of energy as she lifted up her lover in a yoga pose with her strong legs, before taking an impressive dive from the yacht into the ocean.
My heart will go on: Geri Halliwell and boyfriend Henry Beckwith recreate the famous scene from Titanic on a yacht in Sardinia yesterday
And the original: Leonardo Dicaprio and Kate Winslet in the iconic scene from the 1997 film Titanic
Geri, 37, then recreated the famous love scene from Titanic - posing at the brow of the boat.
She laughingly took the part actress Kate Winslet played in the iconic scene from the 1997 film.
Henry stood behind her, in the role of Leonardo DiCaprio, arms outstretched behind his girlfriend.
Geri and Henry met in March and have been virtually inseparable ever since.
Strong Spice: The singer shows impressive strength as she lifts up her boyfriend in a yoga move
Kisses and hugs: Geri and Henry seemed blissfully happy
Their latest trip to Sardinia is their second time to the Italian island and their fourth vacation together in their five months relationship.
The singer has met Henry's parents after spending a weekend with his family at Thurlestone in Devon, where he grew up.
Geri is said to be looking for a father-figure for daughter Bluebell, 3.
Since giving birth to her in May 2006, Geri has had a series of short relationships.
Taking the plunge: Geri dives off the luxury boat
In she goes: A daring Geri goes head-first into the water
Her longest was her six -month relationship with American dancer Ivan 'Flipz' Velez, who she met on the Spice Girls reunion tour.
The pair enjoyed a transatlantic romance, visiting each other in Los Angeles and London.
After splitting with Velez last November, Geri was romantically linked to London nightclub owner Nick House before meeting ex-fiance Fabrizio Politi in a nightclub in Florence, Italy last December.
And they said it wouldn't last: The couple have been going strong for five months
Within weeks, the couple had announced their engagement and Fabrizio was spotted cuddling Geri's toddler, but by early March, their relationship was over.
The singer was first spotted with Henry - a cousin of socialite Tamara Beckwith - last month, just ten days after announcing her split from Italian Fabrizio.
The couple had their first date at Scott's restaurant in Mayfair before spending five hours in deep conversation at Raffles on March 20.
Dry land: Geri and Henry check out the sights after docking at the port
