Of course not!
She was a far superior specimen, and you're just a lowly wad of jizz. You SHOULD be thinking about Her every second of every day, in fact, you should be THANKING Her every second of every day for lowering Her standards far enough that She was temporarily capable of pretending to care about something like you.
If you follow me down this rabbit hole, you will completely give yourself over to your ex-Girlfriend, body and soul. She'll never know it, but in you She will have a devoted worshiper, completely sworn to the fleeting moments you shared in the past. You will never be with another woman, but why would you want to after you had the rapture of Her presence?
If you choose this path, know that it will get scary. Don't let this first tease fool you, as we take our journey together I will hurt you in the most painful way possible: emotionally. Many of you will spend more time crying than cumming, but this is the way it has to be if you are to completely surrender yourself to Her.
If you surrender, choose a number between 1 and 10, write it down, and set it aside. We'll need it later. Now, take your dick out and start stroking...