"Megalovania" is the Greek word for "Megalomania", which means "obsession with the exercise of power, especially in the domination of others". It is also the name of the song played when you fight Sans in Undertale. The song might be called this to relate to the abuse of your power to reset and alter the timelines.
the best love to have, the kind of love when you know that person is the one you want to spend the rest of your life with and you would do anything for them but not because you are whipped just because you love to make them happy and see them smile