The main idea is to relax, to be deep in bliss and tune in sensuality. Warm water and delicate aroma of rose will help.

Ingredients:
1 glass dried rose-petals or 5 drops your best flower perfume
Foam bath

Fill the bath with water about 100F (38C) add foam bath and rose-petals.
Take the bath for not more than 15-17 minutes otherwise you will go to bed instead of romantic evening.
Good luck. And wish you all the romantic.