Well she did think about increasing the load...

As she gave him back his skirt and he put it on, she thought back to the small amount of cum he could put out and suddendly, she had her next plan in mind. She quickly went to her desk and took the book, quickly starting a new category, "The Notebook Owner's Sexual Partner" and wrote beneath it:

Old rule: Emma's sexual partner always ejaculate 1000x their normal sperm output.

As she finished writing this, she felt herself bloat full of liquid and, looking down, she saw her belly way rounder than she remembered it being only a few seconds ago, but before she could comprehend the implications of the rule she just wrote, she felt the aftereffects of her bloating: instant orgasm.

As the semen pushed her walls apart, she felt as if the cock of her boyfriend never left her, a sudden knee-buckling orgasm rocking her body and leaving her on the ground, panting at the edge of consciousness. Her boyfriend came up to her and smiled a bit, somewhat embarassed:

"I don't know why, but since I'm with you, I cum like a fire hose. I've never seen that, it just happens whenever I cum now."

She simply laid on the ground, her mind wandering, eyes going around until she locked them on her boyfriend's cock.

Thinking about it, maybe a little more wouldn't be too bad...