Destructive Love ~ AntixDarkxMarkxJack

Things are going great. Mark, Dark, Anti and Jack all live together. Dark and Anti are in a relationship, and Jack and Mark have unknown feelings for each other. When given the final push to admit feelings, happiness is spread between the four. But things will head south when a demon helps his brother to be more... "confident" and their love for each other blooms into a destructive love for the four.
Will they survive through this, or will their love for each other bring something that neither of them can live through? There's only one way to find out..