The commercial which is due to air during the upcoming Super Bowl, features the 27-year-old model showing off her cleavage and legs in a pretty pink dress.
She shares the frame with a a bushy-haired man tapping away on his laptop wearing a shirt and tie tucked into his trousers, reported Sun online.
Though they seem to be on opposing ends of the beauty spectrum, they are portrayed in the ad to be a perfect match, and they end up locking lips in the advertisement.
The 30-second clip, promoting US web hosting firm Go Daddy, starts with a woman introducing the couple.
She says, "There are two sides to Go Daddy - there's the sexy side, represented by Bar Refaeli, and the smart side that creates a killer website for your small business, represented by Walter. Together, they're perfect."
That's the point when they turn to each other, and lock lips for a passionate, 10-second kiss.
The commercial ends with the message, "When sexy meets smart your small business scores."
