Not feeling attracted to the opposite sex or feeling attracted to your own sex does not necessarily mean you are homosexual/lesbian. Human emotions are complicated. If you think you may be homosexual/lesbian, talk to a person you trust. What everyone must know is that ANY sexual activity where body fluids are exchanged puts you at risk of HIV. Anal sex is extremely risky because the anus is tight and can easily tear, so sex between men transmits HIV very quickly.
Attribution: Straight Talk Foundation & Marie Stopes