God himself commanded us not to marry unside our faith. Good example is Solomon and his eight hundred wives and concumbines. Reason being is these wives of solomon sacrificed there children due to there religious beliefs. Ruth was a foreign wife but approved by God and the tribe because she believed in God.
As far as creation story in chapter 1 male and female, it is a statement God created both, they were not made by some other means. How they were made is in chapter two of Genesis. And in truth we gone over this before. However eve sinned and ate of the forbidden fruit, yet that did not separate adam and eve from being husband and wife, however you think adam would of kicked eve to the curb for a time, but scripture does not allude to that. However it implies they had sex and she got pregnant.
God love encompasses us. Jesus Saves!!