Someone who believes in a true love. This true love endures time and circumstance in the hopeless romantic's heart. This person is a believer and a dreamer. They do not qualify as a stalker because they don't want to infringe on the rights of others. They are patient and caring. They may or may not know their true love. They forgive easily and are prone to broken hearts. They often see the world through rose-colored-glasses.
Charles Dickens' Miss Havisham. Helen Reddy's Delta Dawn. Abagail Adams. (for her constant believing and steadfast role by her husband John's side, she could be defined as a hopeless romantic.)