What is Lord and Lady Montague's relationship and are they in love?

Of course, different people, different cultures and different times have different models of ideal parenting, sometimes wildly different ones, especially in terms of discipline and "keeping them safe". Bad parents, those who are indifferent and who exploit, abandon or abuse their children are easier to spot. The Montagues are not bad parents--they genuinely care about Romeo. But Romeo has reached the age where he is going to live his life according to his lights whatever his parents say. And clearly his upbringing has made him a young man who has no trouble feeling and expressing love, which suggests good parenting. Juliet has the same capacity, with a caring father (who gets violent occasionally) and an indifferent mother.