AceShowbiz -

Gwen Stefani and Blake Shelton looked so in love at the 2016 Billboard Music Awards, especially when they performed their duet "Go Ahead and Break My Heart". Their chemistry seemed to be strong and it was real as a body language expert suggested that their chemistry was explosive.

"During their performance, they were both very much in sync. They both allowed each other to shine independently and together. You can tell by the way they are looking at each other, it's as if they are making love with their eyes," body language expert Dr. Lilian Glass told HollywoodLife.com.

Those who still don't believe that the romance between the "Hollaback Girl" hitmaker and the country singer is authentic may change their mind now. "They are completely mesmerized by each other. Their body language consistently shows without a doubt that they are deeply in love, and that their love for each other is intense, pure and genuine," Dr. Lilian added.

While performing, Gwen stunned in a daring silver sheer dress which accentuated her curves. She let her wavy long hair fall through her shoulders. Meanwhile, Blake looked dapper in a tartan blazer atop a black shirt.

Gwen couldn't stop putting their romance on display as she uploaded a lot of sweet pictures with her beloved beau on her own Instagram account after performing at the awards show. In the photos, the pair seemed smitten as they snuggled up to each other.