1.) Go to a variety store and buy a ring pop. You know...one of those rings with the lolly pop diamond on the top.

2.) After dinner or a walk etc...tell her that you have a very special magic gift for her and show her the ring pop.

3.) Then tell her to close her eyes and when the ring pop is placed on her finger it will change colour. Hopefully she is willing to humor you and go along with this.

4.) Of course you place the real ring on her finger.

5.) Keep your hand over hers and tell her to open her eyes.

6.) Ask her to marry you. She will think you're joking until you lift your hand and she see's the real engagement ring.