If you treated gays as part of your we you would listen to them on whether having a sexual realationship with an opposite partner is natural for them or not, If they are bi, it could be. But gay, let them tell you. You don't have either the right or responsibility to tell them. They are beautifully made, differently ordered and sciende is close to explaining why, but trusting their testimony is enough if they are WE and not THEY.