The perpetrator has greater size, strength, and knowledge. This power is exercised from a position of authority, using resources such as money or other bribes, or outright threats - whatever advantage can be taken to use a child for sexual purposes. Pedophiles who molest boys are not expressing a homosexual orientation any more than pedophiles who molest girls are practicing heterosexual behaviors. They are pedophiles. Therapists who work with sexual offenders know that one way a perpetrator can maintain secrecy is to label the child's sexual response as an indication of his willingness to participate.
Many survivors feel guilt and shame because they experienced physical arousal while being abused.
It does not mean that the child wanted the experience or understood what it meant at the time. While some studies have found males to be less negatively affected, more studies show that long term effects are quite damaging for either sex. While there are different theories about how the sexual orientation develops, experts in the human sexuality field do not believe that premature sexual experiences play a significant role in late adolescent or adult sexual orientation. It is unlikely that someone can make another person a homosexual or heterosexual. Sexual orientation is a complex issue and there is no single answer or theory that explains why someone identifies himself as homosexual, heterosexual or bi-sexual.