When discussing sexual orientation, we are not talking about sex play among children. We are talking about a self awareness that includes an enduring pattern of emotional, affectional attractions in addition to physical attraction. Sexual orientation cannot be determined by behavior alone. It must include an enduring pattern of emotional and physical attraction that simply does not exist in children before puberty. Again, there is no magic age, yet many begin the process in adolescence, while others may not develop an awareness till well into adulthood.<quoted text>
You're basing your opinion on IF the below is actually true without fault.
"...a person still has an orientation even if never expressed through actions."
I know people that didn't believe they were attracted to either sexual orientation and remained single without relationships but on occasion might engage in a one night stand.
So which act defines a sexual orientation? Sexual activity or whom you're attracted to for a relationship? Remember before you answer, in childhood before relationships and sexual activity, most people feel an attraction to one or both sexes. So sexual activity and relationships wouldn't define the sexual orientation for a child who has had neither experience. Maybe both? What of people that like sex but avoid relationships as do exist? What of people that only do relationships but avoid sexual activity outside of a relationship?
One difficulty here is that sexual identity, which includes orientation, is at least a little different for everyone. Yet most in social science agree sexual orientation ranges along a continuum, from exclusive attraction to the other sex to exclusive attraction to the same sex. Bisexual people are those along the continuum, who to various degrees are attracted to both sexes.
So again, an act does not define a sexual orientation. It is the enduring pattern of affectional and physical attraction to one or both sexes, whether acted upon or not. Masturbation doesn't define your orientation. What you think about when masturbating, might be an indication though. But again, we are not talking about children, but rather adolescents and adults who have developed an awareness of an enduring pattern of emotional and physical attraction.
The American Psychological Association:Research over several decades has demonstrated that sexual orientation ranges along a continuum, from exclusive attraction to the other sex to exclusive attraction to the same sex. Despite the persistence of stereotypes that portray lesbian, gay, and bisexual people as disturbed, several decades of research and clinical experience have led all mainstream medical and mental health organizations in this country to conclude that these orientations represent normal forms of human experience. Lesbian, gay, and bisexual relationships are normal forms of human bonding.