Dear Abby: I have been married for 12 years and have two stepchildren. My 37-year-old stepson is the challenging one. He’s the biggest cheapskate I have come across in my entire life. Although he earns a good living in his profession, he rarely picks up the tab when we go out to dinner or drinks, and he almost never picks up his own tab, either. He seems to expect that we, as parents, are obligated to take care of his expenses. ...read more read less