Why is john unable to return lenina’s sexual advances? how has his experience of sexuality been influenced by what he has read and seen? what things have shaped lenina’s view of sexuality?

Actually John unable to return Lenina’s sexual advances means that he may be suffering from depression, and hence it may have caused him unwanted tension and fears in the mind like what will happen during sexual reactions to the opposite sex, he may also be thinking like he may be or perform weak, instead of advancing like a strong man, so because of the above its big disappointment and anger have shaped to Lenina’s view of sexuality for sure.

Any choices to answer ?