history: I cheated on a test at school. I really feel like I should come clean about it to my professor. I was taking an important test in one of my classes the other day... I'm ashamed to say that I cheated.
current: I've cheated on occasion. It's never right but it's easy. At least you're ashamed of it.
next: Yeah... I'm thinking about coming clean about it to my professor before he finds out on his own.