Fire of Heaven and Ice of Hell.

A fire angel and a ice demon. Both two different things, but you know what they say opposites attract. Ignatius was a guard of heaven that stumbled upon a open spot in the wall the separated heaven and hell, but the forefield kept him from entering. This is how he meant Hinrik. They knew it was wrong, but after so many times of seeing each other they began to have feelings for each other. Everything was fine, until Hinrik was caught. Ignatius saved Hinrik, but now either one of them would go back to their home, so they had to make a new life on Earth.