are they going to keep playing in the same sovies after the fourth one?

u mean Robert and Kristen?

well I don't think they will be doing movie after movie together but I'm guessing it is a possibility that they will be in a few future films together

I don't believe Rob and Kristen will be making any plus films together after Breaking Dawn. They were in this movie together because of the saga.

they played in these 4 films together b/c its a series. there a small chance they will play in other films together unless its minor roles.