Who keeps the Engagement Ring?

The Facts:

• Alex ("A") proposes marriage to Barbara ("B")
• B accepts
• A gives B an engagement ring
• After 6 months A and B get tired of each other
• The engagement is broken off

Question:

Who keeps the ring?

1. Post your answer and explanation. Use principles you have learned in my Lecture and Text. This is not based on your opinion alone; your conclusion MUST have a basis in the Law, therefore: YOU MUST refer to the Law and legal principles (say which one(s) and where you found them PRECISELY ("in the Textbook" is not good enough)