We've written an article about Valentine's Day that should be appearing around the web over the next couple of weeks. It begins:
Tantra is an ancient Indian spiritual tradition that recognizes human sexuality as one avenue among many for achieving mystical experience. Although the number of Tantric texts that deal directly with sexual activity is quite small, most Westerners associate Tantra with love, sex, and relationships. While Western ideas about Tantra are thus somewhat misguided, if you can bring a Tantric sensibility to love and relationship, your love life will be richer and more fulfilling.
Go here and scroll down to read the whole thing.