Actress Rebel Wilson sent her fans into meltdown as she shared her latest snap with her new billionaire boyfriend Jacob Busch, who she has been travelling the world with.

Rebel, 40, shared a glamorous throwback snap of the pair in front of a marina in Monaco last month and added a seriously cheeky caption.

After dropping over 3st in weight, Rebel hinted there could be a racy method to losing the staggering amount of weight over the past ten months.

She wrote: "We do a lot of exercise together," adding an emoji with the tongue sticking out.

Rebel made a very cheeky comment as she shared a throwback snap with her boyfriend Jacob

In the picture, Rebel was seen wearing a black mesh top and a pair of of sunglasses, while Jacob matched with a black running top.

The pair seemed to be very happy as they smiled together for the sun-soaked snap, but it was Rebel's comment that commanded attention.

Rebel was bombarded with messages about her cheeky exercise remark, as her fans made some very saucy innuendos about her and Jacob's private exercise regime.

Rebel was inundated with comments from fans about her sex life

One fan said: "It’s not horizontal running anymore, but something else. Wink wink."

Another asked: "What sort of exercises?"

A third said: "I like to call it the "F plan", adding a wink-faced emoji.

A fourth said: "Hottie alert! I would be enticed to do a lot of 'exercise' as well!"

The actress has revealed she's now just 3kg about her goal weight of 75kg

Rebel and Jacob made their red carpet debut together at the Planetary Health Gala in Monte Carlo, Monaco, on September 24.

The actress has managed to shed an approximate 20kg over the last ten months, and has revealed she is very close to achieving her goal weight,

She told her Instagram followers: "Happy Sunday everyone! Gearing up for a great week ahead,' she began.

"This week was super busy but I got up super early three times (6am) and went on a hike... even did a couple of 100m sprints to get the heart rate even higher - although my 'sprint' is probably someone else's 'slow jog'.

"But I felt proud of myself and [am] now only 3kg away from my goal weight!"