First of all, congratulations on receiving this boy's proposal ring. Diamond ring is a kind of high-grade jewelry, usually composed of diamonds. Diamonds are considered as one of the most expensive gems, and diamond rings are a way to symbolize love and commitment.

In this case, if a boy buys you a diamond ring, it may mean that he wants to express his love and commitment to you. He may want you to be his lifelong companion and spend the rest of his life with you. The diamond ring may also symbolize that he wants to spend the future time with you and is willing to provide you with material support and happiness.

In addition, if a boy brings you a ring, it may mean that he has decided to propose to you and wants you to be his life partner. He may have planned it for a long time. I hope you can accept his proposal and start your future life together.

In short, a boy who buys you a diamond ring and brings you a ring may mean that he wants to express his love and commitment to you, which means that he has decided to spend the future with you. I wish you a bright future!