Leave the flowers and cards in their special place and each night for 14 nights repeat this ritual, including the lighting of the white candle (if you need to replace it with a new one, that's fine). I assure you that after two weeks, you will feel a definite change in your intimate bond and attraction to one another.
For the future, for when you feel the need to rekindle your sexual flame, it's a good idea to keep items such as incense, essential oils (great for massage), candles and soothing music close at hand. All you need to do to create a ritual is set aside a regular time and find a comfortable, appropriate and private place to use these items as a prelude to your lovemaking or to inspire romantic, connecting moments. Use the same objects (including the music) each time, so that the experience feels special and sacred. These aspects of ritual will assure you a conscious way to hone in on your love, pleasure and connection.
The next step: learn how to use tantric practices to enhance your lovemaking and connect with your sexual spirit.