Can you be born a homosexual?

It's not clear yet.: Genetic studies still have not conclusively identified markers that are specifically tied to determining sexual identity in men or women. Some family studies seem to indicate inherited tendency in siblings for homosexuality. Large twin studies in sweden don't support a single gene, single environmental variable that could select out homosexuality. It concludes many complex factors are responsible.

Nature or nurture: I believe you can be born with a predetermined sexual preference, as do many who say they knew their own sexual persuasion as young children. While controversial for some, many do believe that homosexuality is determined at birth. Studies have shown that environmental factors play a minimal role in this process.

Yes: Male homosexuality is thought to be largely determined either genetically or in utero, perhaps by exposure to an abnormal concentration of maternal hormones, and basically cannot be changed. Female homosexuality seems to be somewhat more malleable and sometimes develops after failed heterosexual relationships in adulthood, and lends itself more to change by psychotherapy if desired.