2 boys, 3.5yo, play together very regularly. Boy A is more assertive/physical, full of beans type. Boy B is more discreet and sensitive.
The mostly play well together with Boy A taking the lead and Boy B happily following along. When it gets a little rough Boy B will withdraw himself from the play.
So that day we were playing at the park. Boy A running around and kicking bushes with a stick, running after birds.
Boy B playing on his own on the playground equipment (Slides, etc).
At some point Boy B tries to climb onto a big duck (those types of play equipment that sits on a huge spring so you can rock back/forth?). He's halfway there when Boy A comes running back towards the big duck, jump on top of it, push Boy A down and tell him that it is his spot. He's not willing to share nor to jump off nor to feel/say sorry for hurting his friend and pushing past.
As parent of Boy A or Boy B, would you have intervened?
(Boy B is in tears by now)
What would you have done?