Who does this? Well, a lot of Christians do.
For all this talk about purity, the gray areas are not discussed.
The chances that vestal sexytimes will be mentioned during the wedding ceremony are pretty high among Baptists and non-denominational evangelicals.
The ring is ideally given to a girl by her dad, but if he isn’t on the scene or is otherwise apathetic then she might get one herself or ask her mom for one, either because she really does want to make this commitment or possibly because the Jonas Brothers wear them. (Bristol Palin had one too.)
This is the complete inverse of waiting to kiss until your wedding day. Since you’re not technically doing it, you can still technically remain pure.
Who does this? Well, a lot of Christians do. If you google it you’ll find blogs and message boards filled with accounts of people who are waiting for their wedding day to kiss someone, anyone, for the first time.