No, it's true. Each relationship is different - no two are alike. Meanwhile, it gets your neural pathways focused on the new girl and it distracts them from the old. The less time you spend thinking about the old girl, the faster the brain heals. The longer you dwell on the old relationship, the worse the pain becomes. It can continue for many many years like that, even longer than a decade. It is foolish to stay there. No one who truly loved you would want you to experience that - so get a new girl, or more than one - right away - even if you have to pay for it. Break the pattern. The sooner the better. Soon enough, you'll be right as rain. Back to normal. Also, you don't have to keep the new girl. It is unreasonable to expect to find a perfect new relationship on the first try. You may have to date a few of them to find another good one. Nothing wrong with that either. It has to work for both people. But, beginning the process now does get your brain back in the game. It is the fastest path to healing.