love: wanting to be wanted

i think love nowadays, is just a name for a relationship where 2 ppl have the desire to be wanted.. so they mutually fulfill the need.. and are called lovers! during the relationship if one of the persons forgets the deal (the unsaid yet persistent deal!), the other complaints.. then either they refresh the idea of fulfilling that need of being desired or they just part away.. calling it a breakup... or as they say.." there is no spark left" lol :D which spark are we talking about?? the electric shock u got on meeting the person? or the lust? or the sudden satisfaction u got of being desired?