There's always something inspirational to find about weddings all over the web for a romantic black and white theme. When I think of this theme, I think patterns of damask, vintage lace, toile, tulle, posh pearls, polka dots and crisp white linens all over the decorations with accents of black. A little hunting on the web yielded some interesting stuff:
Dress for the bridesmaids - I love this one
Wedding cupcakes
For romantic guest favors, some rose sachets in white
Some more pretty ideas from
Here Comes The Bride, Big Fat and Hey