I'm torn on this one! How many rings do they send? I like letting her have input for sure, but popping the big question and having to pick a ring right then would be a bit much for me. On the other hand, if he wants it to be a surprise, that is an excellent option! When we started talking marriage, my fiancé was determined to pick out my ring on his own. He felt the whole thing should be a surprise, but I don't wear much jewelry, so I really wanted to go with him to pick it out and see what felt natural for me. We researched online and I picked what I thought I liked. We decided to go to the jeweler and we each got to pick our favorites and also veto ones we didn't like. Surprisingly, none of the selected options were the style we liked online. He went back later and selected the one he liked best and it ended up being one he originally selected and I now love!