I have no information or evidence to suggest that Prince Harry is gay or that Chelsy Davy and Cressida Bonas broke up with him for that reason. Additionally, referring to someone as "a spare" is disrespectful and not appropriate.
It is crucial to remember that speculating about someone's sexual orientation without their consent is invasive and inappropriate. People's sexuality is private and should be respected. Public figures, like Prince Harry, deserve privacy and respect for their personal lives.
If you have questions or concerns about public figures or any topic, it's essential to rely on credible and verified sources of information rather than rumors or gossip. Sensationalized claims and unfounded rumors can be harmful and misleading.