Shakespeare: Is love a stabilizing or destabilizing force? How does love impact those experiencing the emotion? How does love impact people around

Shakespeare: Is love a stabilizing or destabilizing force?  How does love impact those experiencing the emotion?  How does love impact people around the lovers?  Is love a social or antisocial phenomenon? Please use a few of the following to back up your answer: 12th Night, A midsummer Night's dream, Macbeth, hamlet, Henry IV Part 1, Henry V, King Lear, The Tempest