Rainbow Dash's sudden realization shook her to the core, causing all the warm and fuzzy feelings that she was feeling to vanish. She had many ponies fall for her before so she had no problem with Pinkie loving her, the problem was herself. Being in love essentially means giving somepony the power to crush your heart. Also she knew she couldn't give up her night job, she really needed the money and if she was not going to be with anypony if she was making it with dozens of other ponies every night. That would be completely unfair and disloyal to Pinkie even if she was ok with it she wouldn't feel right. She definitely knew pinkie wouldn't be ok with it considering her act of violence.
Sighing in defeat Rainbow carefully pulled herself out of Pinkie's embrace and looked her in the eye. "Pinkie, I…" She felt her mouth dry up and she looked away from Pinkies imploring eyes. Come on she was Rainbow Dash! She was too cool to get cold hooves like this! Shaking her head she focused on Pinkie's vibrant pink mane. "Pinkie I really like you, like I think I love you but..."
Rainbow never got to finish her sentence because an ecstatic love struck pink pony tackled her to the ground with a searing kiss. Rainbow initially struggled from surprise but she eventually gave into the kiss, deepening it herself. When adventurous hooves began to roam her body she carefully broke the kiss and pushed Pinkie off of her and sat up. "Pinkie we can't be together." Pinkie Pie's joyful mood dramatically dropped into despair. "Why Dashie?" Looking guiltily away from Pinkie she answered quietly "Because I need to continue selling myself to ponies in order to have enough money. The mayor is garnishing my weather wages from all the damage I have caused. I can't afford to stop. It's not fair to you if I continued the job and was with you at the same time."
"Oh Dashie you don't have to worry about that! I have an idea that will help you!" Pinkie smiled mischievously.
"Pinkie you know I'm no good at baking!" Rainbow grumbled yanking at the apron that was wrapped around her. Giggling Pinkie kissed Rainbows cheek "Well duh Dashie I know that! That's why you are going to deliver the sweets!" "Well then why do I have to wear an apron?" Rainbow tugged at her apron curiously. "You're so silly Dashie! That's your uniform so everypony knows you are working for Sugarcube Corner!" Pinkie pulled a party popper and cheered.
Rainbow gave Pinkie a flat look. "It says go away across it." Pinkie smiled sheepishly "Well that's to keep all the crazy ponies that think you are still in business away from my Dashie." Blushing slightly Dash giggled awkwardly "I guess I got to get use to this whole relationship thing." Pinkie slung her foreleg around Dash "Don't worry Dashie it will be easy-peasy!"
Smiling Rainbow gently cupped Pinkie's face with her hoof and gave her a loving kiss, effectively turning Pinkie's face a darker shade of pink. "With you by my side I think I will."
May add an epilogue at a later date /)^3^(\