What if you could go back in time, but in order to make it possible, you would have to have sexual intercourse with yourself? Would you do it? Would you then feel as though you had become a homosexual and that the action you just took (again) was in no doubt homosexual?
Is it really different than masturbation if time travel were possible? Is there an issue of self-incest softly permeating this whole idea? And if the past tense you wasn't 'in the mood' and you were, would it be rape? There's just some questions on this planet that we as a civilization need to address before it's too late and time travel incest rape plagues the planet. Don't say I didn't warn you.