My husband and I lived together for 8.5 years before we were married. For 8 years we wore silver Hawaiian wedding bands that match that we picked up for 25.00 each. We love them and called them our 'going steady' rings.
Then he surprised me and asked me to marry him and had a ring for me. He had a local native artist design it. We bought him a ring to match the new one but our only dilemma was that we missed wearing our other rings. So now we switch them on the 21st of every month so each ring gets worn every other month. :D