As a genre,  omance fiction  often conjures up images of steamy boudoir encounters or syrupy happily-ever-afters.   Major Pettigrew’s Last Stand and The Three Weismans of Wesport deliver something more. In Pettigrew, Helen Simonson’s Major quarrels with his relatives over the sale of a family heirloom, but finds an unexpected ally in his neighbor, a Pakistani shopkeeper. The result is a smart romantic comedy about decency and good manners.  The Three Weisman’s of Wesport by Cathleen Schine is a sparkling contemporary adaptation of Sense and Sensibility, in which two career women and their recently divorced Mom end up in a run-down beach cottage. Also on hand at the library are standard romantic fare from Nancy Thayer, Mary Balogh, and Debbie Macomber.