Ben Affleck and Ana De Armas enjoy a cruise on his new motorcycle in Los Angeles

Ben Affleck cruises around town in his new BMW motorcycle as he celebrates his 48th birthday with girlfriend Ana de Armas

Ben Affleck appeared to have an unforgettable 48th birthday, as he and girlfriend Ana de Armas took his new BMW motorcycle for a test drive on Saturday.

As the lovebirds cruised around Brentwood in matching green helmets, the 32-year-old Knives Out star could be seen excitedly throwing her arms in the air. 

While the Oscar winner enjoyed his new wheels, which may have been a gift from Ana, he sported a crisp white button-down, grey trousers and a pair of sneakers. 

Birthday boy! Ben Affleck appeared to have an unforgettable 48th birthday, as he and girlfriend Ana De Armas took his new BMW motorcycle for a test drive on Saturday

Meanwhile, the Golden Globe nominee donned a thigh-skimming pale blue dress that showcased her fit arms and toned legs. 

The pair were so eager to jump on his new bike, they forgot to take the stickers off their helmets. 

During their excursion, Ben appeared focused on the road, while his other half playfully flashed peace signs to onlookers and let her long tresses blow in the wind.  

Joy ride: As the lovebirds cruised around Brentwood in matching green helmets, the 32-year-old Knives Out star could be seen throwing her arms in the air in excitement

Joy ride: As the lovebirds cruised around Brentwood in matching green helmets, the 32-year-old Knives Out star could be seen throwing her arms in the air in excitement

Having fun: While the Oscar winner enjoyed his new wheels, which were presumably a gift from Ana, he sported a crisp white button-down, grey trousers and a pair of sneakers

Having fun: While the Oscar winner enjoyed his new wheels, which were presumably a gift from Ana, he sported a crisp white button-down, grey trousers and a pair of sneakers

Earlier this month, it was revealed that Ben’s next directorial project will be an adaption of Sam Wasson’s non-fiction book The Big Goodbye.

The book concerns the making of Roman Polanski’s 1974 masterpiece Chinatown, which helped cement Jack Nicholson’s status as a star and featured an acclaimed screenplay by legendary screenwriter Robert Towne.

Back in May, Ben’s friend Matt Damon was spotted visiting his home with a copy of the book, though it’s not clear if he was returning a copy Ben gave him or suggesting the work to the Armageddon star.

Enjoying the ride: During their excursion, Ben appeared focused on the road, while his other half let her hair blow in the wind and triumphantly shot up her hands with peace signs

Enjoying the ride: During their excursion, Ben appeared focused on the road, while his other half let her hair blow in the wind and triumphantly shot up her hands with peace signs

Ben and Ana first met during the filming of the Adrian Lyne–directed erotic thriller Deep Water, which is based on the novel by Patricia Highsmith and stars Ben as a jealous husband who murders the men his adulterous wife gets close to.

The film, a remake of the 1981 French thriller Eaux Profondes starring Isabelle Huppert and Jean-Louis Trintignant, is currently set for a November 13 release date.

The two took their relationship public in March, when they were seen enjoying a vacation in Costa Rica and Ana’s native Cuba.

The couple both have a busy schedule ahead of them. 

Going strong: Ben and Ana first met during the filming of the Adrian Lyne–directed erotic thriller Deep Water

Going strong: Ben and Ana first met during the filming of the Adrian Lyne–directed erotic thriller Deep Water

Ana will star as Marilyn Monroe in an adaptation of Joyce Carol Oates’ acclaimed novel Blonde, and she’ll also appear in the next Bond film, No Time To Die, which will be released on November 20.

Ben will likely have to record some new audio for Zack Snyder’s director’s cut of Justice League, which will premiere on HBO Max next year.

He was in the midst of filming his supporting role in The Last Duel for director Ridley Scott, which marked his first screenwriting collaboration with Matt Damon since they won Oscars for their Good Will Hunting screenplay.

It was also announced that he’ll be directing and starring in a remake of the classic film Witness For The Prosecution.

Romantic moments: The two took their relationship public in March when they were seen enjoying a vacation in Costa Rica and Ana's native Cuba

Romantic moments: The two took their relationship public in March when they were seen enjoying a vacation in Costa Rica and Ana’s native Cuba