Play Dumb.

"How big of a difference are we talking here?" you say. "I mean, you're pretty big so, what, you were pushing triple D's before, right?"

"W-wrong. I..." Sadie glances away. "It all happened so fast. Yesterday I was... normal."

_Normal. _You rub your chin, fighting back the urge to push her for details. After all, you already know them. If she's telling the truth, she was a B-cup yesterday. Your notebook somehow managed to build a peculiar circumstance. It made a normal member of the track team, with average sized breasts into a slim and stacked goddess.

Anyway you look at it. It's pretty awesome.

"Are you upset about this?" You say, practically without thinking.

"Of course I am! This isn't normal. I grew so big over night... and I couldn't just blow off Diane."

"So you're only worried because it might be dangerous. Like... you're worried about your health? That aside, I bet you're happy about being so busty, right?"

Sadie stares at you wide eyed. "W-well..."

"I'm right aren't I?" You step closer, donning a small smile. "I bet you're actually pretty excited about the whole thing, enough that you'd love to have a little fun. Curious thoughts running through your head, like trying out it fucking, or wondering how much they'd bounce if you took it from behind?"

"I..."

You kneel next to her, running a hand long the side of a breast, admiring the sheer girth. She doesn't stop and the look on her face, hesitant curiosity, tells you you're right on the money.

"It must be pretty jarring. You can probably close your eyes and still imagine yourself normal. Or maybe, you're upset you missed out on being awake during it. Isn't it a little disappointing, knowing it could have happened during sex."

She nods. "When you put it that way... yeah. That's..." She shakes her head. "W-wait, but what if it is dangerous! What if it means I'm sick?"

You lean closer, giving her breast a gentle squeeze. "Does this feel dangerous to you?"

"N-no."

"Then what's the problem?" You back away. After all, there's only so much you can do in the hall. "Sounds to me your only real problem is the Track Team. Can't you just tell them the truth? It's not like they can argue with the result."

Sadie's expression hardens a bit at that. "You're right. I don't know I was being so scared about this..."

"It's not like they'd think you got giant implants or something. These are about as real as it gets and they look amazing by the way."

She stands slowly, covering herself. Despite that she smiles. "Thanks for that."

You shrug. "Hey, I'm not usually rude to girls I'm trying to score with."

You share a laugh with her and you practically feel the tension melt away. You escort her to your friends room and find something for her to put on. You settle for an over-sized T-shirt with your college's initials on the front.

The 'MSU' across the front is alluringly stretched out, punctuated by her erect nipples poking through the fabric. You make no attempt to hide your raging boner, after all, being a straight shooter has paid off well enough.

Sadie's calmed down a bit, but it might be a good time to push your luck a little further.