Can we now add eating habits to the long list of modern relationship deal-breakers? The New York Times published a pre-Valentine's Day article this morning discussing the difficulties couples face when their diets are dramatically different: Ben Abdalla, 42, a real estate agent in Boca Raton, Fla., said he preferred to date fellow vegetarians because meat eaters smell bad and have low energy. Lisa Romano, 31, a vegan and school psychologist in Belleville, N.Y.,......