Explore the room a little first

No, Zack, he told himself. She's your childhood friend, you can't just watch her in the shower, that's a huge violation of her trust... And imagine if she caught you!

But Zack was still an 18-year-old boy, and he wanted to see just how brave Chloe planned to be. She had never worn a bikini in front of anyone – not since she was about 12, anyway, when her breasts started to... develop more than most girls'. So the red bikini sitting in her suitcase caught his eye, and since he'd be seeing her in it anyway...

Stepping over to the suitcase, he picked up the bikini top. It was clearly brand new, still bearing a shop label. 34E. He made a mental note and held it up to admire the large cups. For a bikini, it was rather modest, consisting of full cups, lined and lightly padded to avoid accidental nipple exposure, held together by a thick band with a standard bra clasp. The bottoms were similar, but the idea of Chloe in a bikini, even one as modest as this, got Zack's cock stirring, a semi-erection forming in his boxers as her cleavage filled his imagination. He had never thought about his old friend in this way before.

But now he found himself looking through her top drawer, which held her underwear. Plain bras and full cotton panties bearing cute, colorful patterns dominated, but one item caught his eye: a lacy black bra. It looked expensive – and sexy. His cock twitched. He soon found that it was part of a set when he discovered a matching pair of black lacy panties. They were significantly skimpier than the rest of the drawer's contents; though not providing full butt coverage, they weren't even close to being a thong. And, unlike the bikini, these had been worn – well worn, judging by the telltale discoloration of the crotch.

Imagining Chloe in these made his cock even bolder, until it led him to the pile of discarded clothes by the bathroom door. The pink-and-white striped panties still attached to the legs of her jeans glistened slightly thanks to a layer of wetness on the crotch, and before he knew it Zack was holding the crotch of his oldest friend's panties up to his nose, inhaling the strong, feminine aroma of her arousal mixed with the sweat of her day in the car.

Zack had never thought of himself as a panty-sniffing kind of person . Wasn't that just for creeps like Kurt? But now he understood the appeal. God, he understood the appeal.

Standing by the bathroom door, listening to Chloe softly sing in the shower while he nursed perhaps the biggest, most throbbing erection of his life, he felt an overwhelming urge to just take one little peek.