It is natural that there is a loss of the feeling of “love” as the relationship ages.

We tend to grow complacent and take things/our partner for granted.

The literature tells us to put variety (“spice”) into the relationship by varying how you interact with each other, by doing different activities, by showing how you care for each other.

There is mindfulness where you consciously love.  Love is a verb.

A gratitude journal is a proven method to help increase happiness.  Try doing that specifically on what you are grateful for with your partner.

Mark