The actor explains that he is so happy with his 24-year-old Brazilian fiancée, Camilla Alves, that he would like to start a family as soon as possible.
A source told the National Enquirer, "Matthew is so in love and has been talking about his biological clock and how much he wants to start a family right away. He will be 38-years-old on November 4. He is at an age when men realise it is family time."
McConaughey was so in love with the new lady in his life that he proposed after only six months.