If you watch “Big Bang Theory, you know that Sheldon and Amy have a “relationship agreement.” That may not be as far from reality as we thought. A lot of new brides and grooms these days are signing contracts that have “lifestyle clauses.” These put limits on how many hours of sports the husband is allowed to watch on T-V, or how much weight the wife is allowed to gain. One New York City matchmaker calls it ridiculous, saying if you love someone you love their inside — and their outside.