When you find yourself trapped in a fantasy world, you eventually give in and start dating the cute fox girl who was accompanying you across the continent, doing her best to help you find your way back to your home world, but secretly had a crush on you the entire time. Really, it wasn't THAT much of a secret.
And at the edge of everything, where you finally abandoned your last fruitless hope to find the way back, you consummated your love and accepted this strange new reality. You knew you'd be able to face anything with her at your side.