What role do love and marriage play in Romeo and Juliet?

What role do love and marriage play in Romeo and Juliet?
<Tab/>The play of Romeo and Juliet includes several different types of love known in the 1600s. Courtly love is the first example known in the play discovered by Romeo and his false love for Rosaline (today's equivalent could be a crush). It is very formal and elegant yet rejection can lead to depression and acceptance to joy. Parental love expressed by the Nurse to Juliet and the Friar's help for Romeo (although the 'parental' love is not between parents and child) The Nurse is Juliet's best friend, but her care is…