Turn on a slow song and dance with her and hold each other like there's no tomorrow.
Leave flowers on her pillow, light the candles, maybe an "I love you" card. But do it when you won't be there to receive
the praise. It will give her something to ponder while she waits for you to come home!
Send her a letter. Tell her how much she means to you and mail it from your house to hers even if you live five minutes
away. A phone call may be much easier, but this letter will mean so much more to her than you can ever imagine.
I have alot more ideas but I can share those with you in person. God bless you with a fullness of love for Him and your