I thinks it is better to just move on. Although it is easy to say this. If you keep thinking about bad things they will keep your mind locked in patterns, sure remember the things that happen and learn from them. Of course I haven't had some of the horrendous things that have happened to some people go in my life, so who knows how they would effect my decisions?
Definitely yes, just move on of what had happened and learned from it. Nobody is perfect. Just accept and try to understand why it happened. Nothing is constant in this world. Karma is real. So,what you don't want do into you, do not do into others.