I get confused - use this one if you are describing situations that might happen that usually confuse you. You are not necessarily confused now. "I get confused when I get too many e-mails at one time." "I get confused when I try to read train schedules." I got confused - You are talking about a situation that definitely happened in the past in which you became confused. "I got confused when I saw the instructions." "I got confused trying to read the signs in English."