Didn't you? Try Schopenhaeur, Sartre, Neitzsche, Hobbes, de Sade, de Beauvoir, Lacan. They don't, of course, deny the existence of strong human bonds. What they deny is that these bonds are really based on something that is recognisable as what we would call love. Really these bonds are based on desire for power, for pleasure, for procreation or for some unconscious drive that decieves the lover.
I won't give their arguments, because their books are readily available.