Tobey Maguire didn't leave his daughter's side for three weeks after she was born. The 'Spider-Man 3' actor says his life has changed dramatically since his jewelery maker fiancée Jennifer Meyer gave birth to the couple's first child, Ruby, last November.Tobey, 31, said: "I have other aspects in my life now. I have a little daughter and that changes things tremendously."I didn't do anything for three weeks after she was born, literally didn't go anywhere or leave where she was for more than an hour. Then for six weeks I wouldn't do anything that meant leaving her for more than a few hours."Last month, Tobey took Jennifer and Ruby along to the world premiere of 'Spider-Man 3' in Tokyo, Japan.The actor took his family along to the glitzy event because he couldn't bear to be apart from them. He said: "I love being a dad. I didn't want to be away from them and I didn't want my fiancée Jen to miss it. It's a pretty eventful moment and I wanted to be with them. I haven't been away for a night yet." The superhero movie, which is based on the Marvel comic book series, opens worldwide on May 4.