Try to include them, maybe take them out for pizza and a game of ping pong.
Too soon?
Seriosly though, LINUX said it best - especially with boys. You were a boy once too... Find out what they're interested in and share your knowledge, they will look up to you. For girls, the same to some degree but I think it's often more about attention. She sees the pattern where she becomes invisible every time mommy has a new dick in her life. Don't be another one, just pay a little attention to her so she doesn't feel left out.
As an aside, you'll be amazed at just how fast that girl you watched a Disney movie with suddenly becomes the girl you bump into in a bar that gives you a big "OMG!!" hug and introduces you to all her 18 year old friends.
Too soon?
Seriosly though, LINUX said it best - especially with boys. You were a boy once too... Find out what they're interested in and share your knowledge, they will look up to you. For girls, the same to some degree but I think it's often more about attention. She sees the pattern where she becomes invisible every time mommy has a new dick in her life. Don't be another one, just pay a little attention to her so she doesn't feel left out.
As an aside, you'll be amazed at just how fast that girl you watched a Disney movie with suddenly becomes the girl you bump into in a bar that gives you a big "OMG!!" hug and introduces you to all her 18 year old friends.