sentence1: In The Bride of Lammermoor (Chapter V), we are informed that the heroine  placed certain restrictions on their intercourse,  a limitation that might have been more usefully set in that same author's Rob Roy (Chapter VII) where we are told of the chance that the narrator and Miss Vernon might be  thrown into very close and frequent intercourse. 
sentence2: They had restrictions about how they may have sex and false is not true 