Getting lied to sucks. Getting your heart broken sucks.
Getting betrayed by a friend or family member sucks. Anytime someone hurts you, it really sucks, and the worst part about today's society is that it's okay for someone to hurt someone else and just walk away. You won't always get an explanation. You won't always get an apology and you won't always get the closure you deserve.
Sometimes people run away and leave you broken and they don't see that you deserve the peace of mind to know what you did wrong - if you did do anything at all.
When people run away like this, it's probably the worst kind of hurt you can be because you're left with to many questions and all you might want is an answer, but that's the exact thing you're not getting. It can actually drive you crazy and leave you feeling worthless because you don't understand what happened.
This is where you have to learn to accept the apology you never received. This is the hardest thing to do. It's so hard to forgive someone when you don't understand what you did wrong or why they hurt you. You don't know what you did to have things go wrong or to lose someone who was once a part of your life, but you have to try to just learn that it may not have been something you did, but something that was inside of them.
You have to look at yourself and be able to say that maybe it wasn't something you did. If that guy who you thought you loved cut you out of your life without any explanation, and you keep trying to figure out why he decided to ghost you when things were so great, you need to stop looking at it as a reflection of yourself.
You need to look at it as something is going on with him - maybe he did find someone new, maybe he got scared of what you offered, maybe he just couldn't be what you needed, maybe he didn't want to hold you back - regardless of what it was, you need to forgive him. You can be angry; hell, you can even hate him. You can still be upset, you can still be hurt, but you can still forgive him. Being able to move on is saying that you forgive him for being a crappy person because you're worth the peace of mind and happiness it will bring you to move on.
If you have a friend who cut you out of their life, sometimes it's even harder than losing a stupid guy. You thought you had someone who had your back and saw different sides of you and accepted you. Then, all of sudden, regardless if there was some drama or not, they decided to just cut you out. It's one of those things that you can't figure out and they're cutting you out, so you'll never really know why. Forgive them. Whatever happened, it hurts, but sometimes it's a reflection of them and not you.
It's one of the hardest things to do, but learning to forgive people who never tell you I'm sorry is one thing that will be able to set you free from the constant wonder and the hurt that makes it hard to move forward. Being able to look at someone who really hurt you and say I forgive you, even when they can't admit to treating you poorly, shows them that you have the maturity to move on and find happiness for yourself. Because that's all we all really want - happiness - and forgiving those who have wronged you is the quickest way to get there.