Eros, who was awakened when the girdle was cast aside, thought it unfitting that the Goddess of Love should turn herself into a Goddess of War, since that post was already filled by Athena. On the other hand, a battle between the Goddess of Love with the God of War also did not make sense, as they should either make love or make war & indulge either in love-games or war-games. For how could one party make love whilst the other make war at the same time? For it took two parties to either make love or make war.
And thus Eros decided to turn Mars into the God of Hate to see whether a battle between Love & Hate could produce Chaos, since Love & Chaos were one & so were Hate & Chaos. And thus Eros sent Phobos & Deimos to Mars, to turn the God of War into the God of Hate.
