27-1-603. Acts within Montana not to give rise to abolished cause of action. No act done within this state after July 1, 1963, shall operate to give rise, either within or without this state, to any of the causes of action abolished by this part. No contract to marry which shall be made within this state after July 1, 1963, shall operate to give rise, either within or without this state, to any cause of action for breach thereof. It is the intention of this part to fix the effect, status, and character of such acts and contracts and to render them ineffective to support or give rise to any such causes of action within or without this state.