What is forgiveness?

So I've been wondering how long it takes to forgive people? Does it come with time? Does it take an apology? Is it for you? Is it for them? Just because you forgive them doesn't mean that you will ever trust them again, right? Or does it? Will an sob story follow the "i am sorry" and you are back in the same boat of lie and betrayal? We're they really right and you were really wrong? How do you know? I have quite a few people on my "Forgiveness list" but I just don't know if I can do it. But if I did wrong would I want someone to forgive me? Do I be th bigger person and talk first? Or do I keep these bridges burned and never speak to or of them again? These issues have long since passed but I can't help but wonder "is it time?" "can I just get over it?""why does it bother me so much?" these are things I am constantly wondering to myself. A lot of people can walk away from friendships and never look back. Unfortunately, I am not one of those people. Weather I am right or wrong I just want to make things right. I seem like a total push over and I let people walk all over me but what if they die tomorrow?? I mean at one time these people were a big part of my life. Can I be sad? Can I cry? Can I attend the funeral? Yes, my mind really does work like this. Are these people really bad people? Was I such a terrible person to deserve such horrible treatment? I really wanna know opinions on forgiveness. Please share your thoughts. - Sometimes burning bridges isn't a bad thing. It prevents you from going back to a place you should never have been to begin with.