The Matchmaker by Elin Hilderbrand

Dabney Kimball Beech lives and breathes Nantucket. With the exception of going to Harvard, she's pretty much spent her whole life there, refusing to move to Thailand with her childhood love, Clen, after college. She raised their daughter, Agnes, on her own, until she married economics professor, Box. While happy with Box all these years, Clen has always been the love of her life. When Dabney gets an e-mail from Clen telling her that he's coming back to Nantucket, she's stunned, since she hasn't seen him in over twenty-five years. Keeping Clen's arrival secret from everyone, Dabney also hasn't been feeling well lately and wonders what's wrong. Combining the lifelong love story of Dabney and Clen with accounts of Dabney's matchmaking abilities for more than forty couples, The Matchmaker packs an emotional wallop. Make sure to have tissues handy...