Actor George Clooney and wife Amal Clooney are still "mad about each other" and seeing them together is like "watching a rom-com", according to their friend Kathy Lette.

The 54-year-old actor and the 37-year-old British human rights lawyer got married in Italy last September.

Lette isn't surprised that the Oscar winner proposed to the brunette beauty in April 2014 after just seven months of dating, reports people.com.

"She's drop-dead gorgeous, your jaw hits the ground, but she's also very charming, funny, self-deprecating. She's as warm and down-to-earth as ever," Lette said.

Lette, who is the author of "Courting Trouble", has loosely based his new novel on Amal.

She said: "It's about a woman in her 30s in the legal world trying to change the world and make it a better place."