You'll find that if you let yourself, you will tend to move away from a failed relationship. It's human instinct to move away from things that cause us pain once we admit there is nothing to be gained by staying.
You dont ever forget the joys or pains, but with time like DavidK said, the pains will become more bearable. Try to learn from the experience. Get involved in something that will give you satisfaction and help others (volunteering). We all have character flaws to work on, but first they must be identified, so take a good look at yourself and improve on the ones that you can. Peace-Sherlock
Forgive yourself for what you said and did. Forgive the other's words and actions. Do not hold anything against yourself or the other. If you can, apologize to the other for your part. If you can't, apologize to Jesus. Then whenever thoughts or feelings come to drag you down, tell them to go away, in Jesus's name, because they have already been dealt with. Trust Jesus to heal your wounds and keep you safe until He brings the one for you to you.
As everyone says, PAST is past. It may took long to forget but you may divert yourself into something new like exploring your passion, likes, dating someone and etc. Just don't forget to pray to God and ask for signs.