All or Nothing

"She finally, finally, takes in the sight of the woman standing in front of her and the rest of her furious words die in the back of her throat because oh, oh, no-one should look like that. Tall and brunette and so very gorgeous, barely in her mid-twenties with sparkling apologetic eyes, a pair of sinfully tight black jeans on her hips and a sleeveless t-shirt to show off the muscle in those arms that had caught Lauren so quickly." AKA the hot neighbor AU