Why is john happy that bernard is not married to lenina?

John is happy that Bernard and Lenina aren't married because he wants her for himself.

Set in London in the year AD, the novel anticipates developments in reproductive technology, sleep-learning, psychological manipulation, and classical conditioning that are combined to profoundly change society. 

- "there are several movements that doris lessing was associated with. first of all, communism. she pursued her communist beliefs and included them in her writing, and was also a member of several communist book clubs. she is also strongly associated with feminism, her fight for equality and women's rights.

doris lessing is the kind of writer who has followers, not just readers. they have been engaged to her chiefly because of her involvement in major problems, such as politics and woman-ism."