Is it possible there is a spectrum, with most people laying somewhere between the extremes of 100% mono or 100% poly?
Not that the extremes have been defined, but I would think 100% mono would mean one partner for life. A person might date but not get sexual or express romantic love until they were absolutely sure this was "the one".
100% poly, on the other foot, would mean what? Loving everyone they meet?
Often he had been often bound with fetters and chains, and the chains had been rent asunder by him, and the fetters broken in pieces: neither could any man tame him...and he asked him, What is thy name? And he answered, saying, My name is Legion: for we are many.