Part of dating someone and ultimately marrying them is learning everything about them. Where they came from, where they work, what their dreams are. But what if all of that is a lie?
What if it was just an elaborate cover story to protect their true identity? What if they are secretly a foreign agent and everything you thought you knew turned out to be untrue? That would be bad.
I wish I had more insight than that, but I don't know what else to say besides, "That would be bad." If you are going through that I wish I had some advice for you, but all I can say is, good luck, buddy. And if you are just questioning if that's what you're going through, here's how you can know for sure.