If you are asking for a source, as in a study or a scientific finding, then I have nothing for you. But I don't need a study to tell me something that is pretty obvious.
I can trace the reasons why homosexulaity developed for all of the gay people that I closely know. Some deny it, and some don't even realize that I know they are gay.
these factors are some of the reasons why homosexuality develops in people, but it doesn't always necessarily mean that people will turn gay because of them:
- Lack of a strong father figure. (no father, dad was too busy, etc..)
- Too attached to their mothers.
- Surrounded by sisters, with no males around him to form bonds with.
- Abused during childhood/teenage years.
- Faced Rejection by a female during childhood/teenage years, and that rejection left a lasting impact.