The nurse and Juliet have a very healthy mother and daughter type relationship. The nurse cares about Juliet so much, as if she were her actual daughter. If Juliet ever has a problem she goes to the nurse for help, or if she is upset or needs someone to talk to she goes to the nurse. Juliet trusts the nurse like she was her actual mother, and the nurse has been very supportive of her loving Romeo even though she knows it's dangerous. She just wants Juliet to be happy, even if it means she is with their enemy. The nurse even helped deliver Juliet's message to Romeo for her. She had always been their for Juliet and so Juliet will always want to be there for her. After the nurse delivered the message from Juliet to Romeo, she came back to the house and delivered the message to Juliet and said "then hie you hence in Friar Lawrence's cell. There stays a husband to make you his wife". This is why the nurse and Juliet have a healthy relationship. I think there is nothing bad about their relationship as It's very healthy. Even though Juliet's mom should be doing what the nurse is doing for Juliet, it's not the case with this family, because it's very dysfunctional. The nurse has played the role of Juliet's mother ever since Juliet was born.
Unhealthy
Juliet and her parents have a very bad and unhealthy relationship . Juliet's parents are forcing Juliet who is only 13 and Paris who is an old man to get married. Juliet's dad also paired them together, all he cares about is if he's a Capulet or not, and if he has money. Juliet's parents are very superficial. Juliet doesn't love Paris, but they are going to force her to marry him anyway. They even threatened her if she didn't marry him they would kick her out of their home and protection. Juliet's parents know that she doesn't love Paris, but they don't care. Juliet doesn't even have a relationship with her mom, as the nurse is her mother figure to her. Juliet's mom is always drinking or partying somewhere and does what ever Juliet's dad tells her to do. Juliet has a very unhealthy relationship with both of her parents. The nurse is the only one that truly loves her. Juliet's own dad told her "hang thee young baggage, disobedient wretch! I tell thee what-get thee church a Thursday or never after look me in the face" which means that if she doesn't marry Paris on Thursday he will kick her out and never see her again and if that's not bad enough Juliet's mom Lady Capulet says " talk not to me, for I'll not speak a word. Do as thou wilt, for I have done with thee". Juliet's mom doesn't care for her she just said she is done and she doesn't care, she doesn't even stand up for Juliet. Therefore this is a very unhealthy relationship, and there is no good side to this very bad relationship. Juliet's parents have never been there for her, and they don't care. All they care about is themselves, partying, and how other people see them. They don't care what's best for Juliet
I think that Shakespeare would think that the most common relationship would definitely be the relationship that Juliet and the nurse have. Back in that time it was normal for rich families to have a nurse considered to be a mother figure to the children because the rich parents would be out all the time partying and socializing away from their families. They didn't really care for their own children. Nurses would be there all the time for the children because the fact their parents where never there or looked after them. I think that Shakespeare would think this because in those times it was very common for the nurses to be the mother figure, not so much the relationship Juliet has with her parents. I think that Shakespeare mostly thinks people are bad because in his story there is always fighting between the Montagues and Capulets, and Juliet had a bad relationship with her parents. Shakespeare writes a lot of tragedies and writes more about dysfunctional relationships than good ones. I don't think Shakespeare is very optimistic regarding people. Perhaps he is more of a cynic as he thinks most of the people out in the world are bad. We know this because of what he writes in his stories.