You've seen it before in the movies: the boy loses the girl, then musters up the courage to fight for her, giving her some profound speech about how much she means to him, making her break down in tears and fall into his arms.
It is a blue pill fantasy that Hollywood likes to propagate and peddle as something men should be doing. The truth is, by the time you've lost her, it is way too late for you to do anything. You should be moving on with your life and leaving her alone.
When a woman breaks up with me, I break up with her. Seriously. I politely walk her to the door then slam it shut, never to hear from her again. No more bullshit. No promises of getting back together, or the so-called "breakup sex". None of that shit.
We live in a world of abundance. Abundance of food, abundance of information, abundance of time. And most importantly: abundance of women. There are just so many women out there to date, it is a real shame when a man confines himself to one individual.
There is no fighting to get her back. She is long gone. And instead of moping around and degrading your manhood by begging her to take you back, you should be building yourself up for a new challenge, a new quest, a new woman.
Conclusion: Hollywood got it wrong. There is no fighting to get her back, no elaborate speeches that will woo her, no knocking on her bedroom window and whisking her away. This is real life, and in real life there are consequences to actions. Meaning that it is time to move on.