It seems Duncan James has started realizing his responsibilities, as the 'Blue' singer has decided to give up casual sex before becoming a father later this month.

James says that he wants to lead a more mature lifestyle to set a good example to his unborn child.

"Becoming a father has made me not want to go out and get drunk with my mates. I'm not interested in having meaningless one-night stands that make me feel cheap when I wake up. I have something else to concentrate on - someone much more important than me," Femalefirst quoted James as saying.