Only love mends a broken heart. Time will not heal it, in fact, never. Your resentment to love will only grow if you let time heal it. Always take a chance to love .... it is better to have loved and lost than not to have loved at all.
Don't dwell on what has ended your relationship but on things that kept you together during that relationship. Then those memories of love will help you through.
There's no way you can forget a person who has been a part of your life. Our brain is not some memory chip that gets erased when the power is turned off and more so our heart. Remember: whatever does not kill you can only strengthen you.