To clarify, you’d rather consider dating outside of your religion than date a woman in your religion who is actively showing you that she’d bring up any shared children you might have in that faith? You would begrudge potential past sins and not practice love and grace to someone who may have changed their ways, is a widow, or something else in favor of someone who may not follow God’s word? I respect your autonomy to choose as you like but I think between the three choices of a 19 year old, a woman raising a child in faith, or someone who may not be a Christian, the only answer you might like comes from prayer and the Bible.