And that's, "I must have this one person." There's attachment, which is oxytocin, and the opiates, which says, "This is a long-term bond." See the problem is that, as humans, these three can separate.
Es "necesito a esta persona". Está el apego, que es oxitocina, y los opiáceos, que dice "éste es un vínculo a largo plazo". El problema es que, en los humanos, los tres pueden separarse.