To be kissed in the rain.
To slow dance (music optional).
To be a priority.
To take a romantic bath together.
To cuddle on the couch while watching a movie & take a nap together.
Little notes, text messages, calls, IM's, whatever, just some form of communication during the day letting her know that you're definitely thinking about her.
To be kissed on the tip of the nose.
You to whisper "I love you" in her ear at unexpected moments.
To be chased by the man she loves.
To fall asleep in your arms.
Your eyes to light up when she walks into the room.
To feel like she's the most important person in the world and you can't live without her.
To stay in bed just a little longer than normal
If you don't you may lose her to someone that will.