Who Plays The Board Game?

A group of children decide to play a board game but only two boys and two girls can play at the same time.  Alfred will only play with heather. Heather won’t play if Ben is playing.  Ben won’t play if John or Clara plays.  John will only play if Zara plays.  Zara doesn’t mind who she plays with.  Which 2 boys and which 2 girls play the board game?