Never Look Back

Once you've taken a step forward, why would you take a step backward? Once you've gone forward, once you've moved on, there is no going back.
When you move away from somewhere, and even to go back for a visit, it is not how you remember it. Things have changed. People have changed. You have changed. You can't go back to how it once was.
When you are a freshman in high school, you might need to repeat freshman year, but you will move on to sophomore year, then jr, and lastly sr year. When you graduate, you won't go back to being a freshman in high school. High school is now over. You will move on in your life whether you go to college, get married or just jump into work. That time in high school is over, it's done. Only a memory.
Once you've dated someone- no matter how long it was. Once it was over, you moved on. Dated others. Fallen in love with another. You might miss someone you were with, but there is no going back. If there was no one in between, then you could repeat the relationship because you didn't move on; but if you did move on, that's it, it's done, it's over.
We will miss things and places and people from our past. It usually is fun to visit and stroll down memory lane. You have this memory of your life at that point, sometimes if you go back, that memory is destroyed. Why destroy a beautiful memory? Why go back when you've gone forward.
it doesn't make sense. You should never look back. Just be happy that was once the life you had and try to make the life you are living now even better!