motomeai (求め合い) means to want something, i.e. love, from each other, or maybe just plain want each other. You might say "need each other" in the sense people (maybe not real people) dramatically declare "I need you!" - I imagine this is fairly passionate in context.
I hope >4 was some kind of oblique troll or joke. Otherwise fuck off and don't try to answer questions if you don't know the answer, please.