Her feelings are very sensitive and easily hurt, so be careful how you address her. In any relationship, she likes to proceed gradually, perhaps at a slower pace than you would like. But rush her and your little fish will disappear into the depths of the sea.
She's mystical and poetic and she needs a regular outlet for her creative expressions. Her sign rules all non-verbal communication--symbols, gesture, dance, art, and poetry--and the Pisces woman is highly intuitive. She trusts her feelings and she reads body language perfectly, so don't try to say one thing and mean another--she will catch on quickly. Pisces will need to be alone occasionally to recharge and refresh herself, so allow her time for that.
Give her a book of romantic poetry, like that of Edna St. Vincent Millay or a beautiful black & white photograph of a couple kissing. Or give her music, perhaps something soothing and spiritual, that will speak to her feelings she holds deep inside her.