Picking an engagement ring

Taty

So we have started talking about getting married more seriously lately. For rings, I have shown him a designer I love and styles I like. He seems really worried about picking the wrong one "since I have to wear it forever" to the point where he wants me to just pick out what I want when the time comes.

Am I being too sentimental by liking the idea of having him pick it out based on what he knows about me, so that it can be a real surprise?