Anne Caroline began dating future United States President James Buchanan in 1818. Buchanan was at the time a lawyer in Lancaster County. They soon became engaged, much to Robert Coleman's displeasure. Coleman was apparently unhappy with Buchanan's reputation and checkered history at Dickinson College in Carlisle, Pennsylvania. Rumors abounded that Buchanan was marrying Anne Caroline for her money, as well as seeing other women. After one incident of him visiting a friend's wife (this may have been an innocent visit), Ann broke off their engagement and died soon afterward, probably from an overdose of laudanum. Some historians theorize this may have been a suicide[http://www.americanheritage.com/articles/magazine/ah/1955/1/1955_1_20.shtml]. James Buchanan was so devastated by the broken engagement and suicide that he vowed never to marry and eventually became the only bachelor President in the history of the United States.