Help with 6 month anniversary gift!?

I'm getting my boyfreind a ring for our six month anniversary. I want o have something sweet engraved on the inside. I just don't know what. I only have 25 letters and spaces to use on it! We plan on getting married and have already set a date for 2010. I want something that will express the anticipation of our wedding as well as express my love to him! HELP!