George Clooney had no idea meeting his wife, Amal Clooney, would change his life forever. According to an insider, the actor, 63, “wasn’t really interested” in settling down before meeting the human rights lawyer, 46. “He had an amazing career, wonderful friends and felt very fulfilled. [But] once he fell in love with Amal, George [realized] how much he was missing.” Added a third source: “George didn’t think he’d ever meet someone like Amal. He’s totally enamored with her. She’s so intelligent, a great conversationalist and everyone loves her.” The pair, who share twins Ella and Alexander, go…