When you and your partner re-unite after a day apart, greet each other with a lingering kiss (count to 10 slowly). This not-necessarily-sexual touch will get you on the same page more quickly than a one-second peck.

Footsy
When dining alone or with friends, play footsy under the table. Something about that just feels naughty... and nice!
Your Song
If you don't have a "special song", choose one. Every time you hear it, no matter where you are, give each other a knowing look - or get up and dance!
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Strong, Healthy Marriage - Our Personal Top 10 Relationship Tips