Look what idiocy psychology has turned into. This is one of the most incredibly stupid things I've ever read: "Partner monitoring mechanisms, like jealousy and clinginess, should be advantageous in that they minimize non-monogamy and help keep fitness benefits intact. But partner monitoring can cause relationship strain, for example, if a partner does not react well to being accused of infidelity or feels overwhelmed by a partner’s clinginess. This might explain why many couples report clinginess and lack of personal space as significant sources of strain."