Romantic Secret Messages

If your spouse reads then find a page in their book that they have not yet read and take a pencil and underline letters that when written out spell out a message of love to them.  If you leave before your spouse in the morning then go in the bathroom and use a bar of soap to write a love message on the mirror.  Find ways to give them a message of love any way you can using a secret code only you and they know about.