DEAR ABBY: I recently married, and my 19-year-old son and I moved in with my new husband. My son works full time and goes to school part time. My husband expects him to do dishes and other chores. My son does take care of the recycling and trash on a weekly basis. I work from home part time, and I don’t mind doing the chores. This is causing a lot of contention between us. Am I wrong to defend my son? — WILLING IN FLORIDA DEAR WILLING: You should not have to “defend” your son. There are now three adults living under that roof. Your son is not a freeloader, he’s working full time and taking cl…