How can I help "in your face" son?

[mumofthreebeauties]

I may be completely paranoid here but I am concerned about my 5 yr old and how he talks to people.

when talking to friends or adults, he gets right up close to about 4 inches from their faces to talk. Some find this unnerving, especially other children and don't like it.

I'm worried if we don't do something now he will alienate his friends. He already is quite impatient and a little immature. Today he pushed a friend of his because he wanted him to play fight and his friend didn't.

will he grow out of this? His twin brother doesn't do it and seems to be making a lot more friends.