The couple, who announced their engagement in August 2011, eloped and wed in southern California on Sunday, April 8.
Appearing on Good Morning America on Tuesday, Lake revealed that she kept the event private so that the couple could enjoy their special day without any interference from the media.
"It was a week ago and I am so, so happy to be with him. Better late than never," she explained.
"I have the biggest mouth. I'm someone who shares everything. I wear everything on my sleeve. [But] I wanted it to be for us."
Shortly after becoming involved with Evans, Lake said that she was madly in love with him and had never felt that way about anyone.