its a misguided question - Christianity does not say YOU MUST BE ATRRACTED TO THE OPPOSITE SEX
I see what your trying to do, put the shoe on the other foot, but it is different your trying to force someone against their sexuality to engage in sex the church does not do this, fundementally the question turns the whole of Christianity upside down, its doctrines everything, you dont realise the difficulty with your question.
My honest answer is....
I would be wiling to abstain from hetrosexual sex for the glory of the kingdom of God but I would not be willing to engage in sex with someone I do not feel attracted to or love.