Jennifer Lopez, Ben Affleck cruise on actor’s birthday, singing along 'I Love You'

Jennifer Lopez and Ben Affleck are celebrating actor’s 51st birthday in the best possible way.

In honour of Affleck's 51st birthday, his wife Lopez, 54, posted a video of the couple singing along to Sam Cooke's 1960 love ballad (What a) Wonderful World on Instagram on Tuesday.

"Dear Ben... Happy Birthday. I love you!" As she sat in the passenger seat, while her hair flowing in the wind, with her husband of one year was on the driving seat, Lopez showers love in the caption of the short video.

The couple was seen spending time together while donning matching white shirts in the romantic birthday snippet.

This summer seems to be the season of celebration for Mr and Mrs Affleck as the couple initially celebrated their first wedding anniversary on July 16 followed by On The Floor singer’s 54th birthday on July 24.

"Thank you all for the birthday love. Here’s a lil peek into my party," Lopez sometime ago penned in her On the JLo newsletter as she shared photos with Affleck from her birthday party. "Ben hosted it at our new house with our closest family and friends. All the kids were there, it was a gorgeous day full of sunshine and perfect for a pool party!!"

"I felt so appreciated and acknowledged by my loved ones, and I'm extremely grateful to be where I am today at this point in my life’s journey with so many beautiful, caring people to share it all with," she continued. "Wishing you all the same love and happiness on your birthday and always!!!"