A promise ring is a symbol of commitment between two people, often given in a romantic relationship. It represents a promise to be faithful, loyal, or to someday get engaged. Full definition
But presenting him with a set of promise rings several years down the road when the circumstances call for it is perfectly fine. (thedatingdirectory.co)
This ring can also make a perfect promise ring. (geekwrapped.com)
But if you decide you are ready for such serious step, there are plenty of beautiful promise rings to choose from. (modernlovelongdistance.com)