"I'm better now" is a common phrase one might say after they've committed a wrong and have lived through whatever punishment they've had to endure. Unfortunately, I don't believe that it is their place to say something like this. For me, it's trying to over commit to the notion that the person has been reformed. It's not up to you to tell me you're a better person now. Your actions and words from here on out will convince me of such things.