Be bad, that's what they all want anyway, throw caution to the wind and go for it! Just for the love of God, don't tell anyone! Go Operation Shadow, no family reunions. You'll have to distance yourself from your family too, because if you introduce her to the folks, they might do some investigating of their own. Do this at your own peril, but if you like her you like her. But if you do, you both might find yourself on a deserted island with each other good or bad, just know the consequences.