why dwell on the past of someone else

Now I say this for everyone. We all have things in the past that we might have liked. Stupid things, things that we regret, and things that could've easily been taken back. As humans, well all make mistakes. It's only up to the person to learn from it. That's why if someone, especially somebody you might be or want to get involved with, has a few "flaws" in there lifetime, don't fully judge them. I mean people really do change. I know I know, there's a possibility that they haven't and they'll end up screw you over. But are you going to sit there and no even give them the chance? That my friends, is up to you. I say F**K their past and start yourself fresh with them. Give 100% because who doesn't want to be a 100% type of person? I mean you would want him/her to be 100 too right? Just give them a chance and you'll find out for yourself. If they turn out to be the same or screw you over somehow, hey, at least you gave 100% and tried. In the end, you're still a respectable good person. And even if bad memories come along with the package, I'm sure there will be plenty of good loving memories too. So never should you ever dwell on the past of someone else. I mean the point of the past is to get passed it right? haha who knows, they could be the perfect one for youuu :)