One day you’re going to see her holding hands with someone who took your chance. She won’t even notice you because she’s too busy laughing with the stupid jokes he makes. And it will burn your heart seeing that beautiful smile on her face and realizing that you’re not the reason anymore. And then it will finally hit you: it was her, it was always her.
Fun reproductive fact: you were not the fastest sperm
Other sperm start burrowing into the egg and die on the way in. You were an opportunistic sperm that waited for the others to die making it easy for you to burrow in.