The project was due in two weeks and the two of them hadn't really even started yet. The two eighteen year old High School Seniors had been assigned as partners, but both being shy hadn't taken the lead in getting things done. It didn't help either that I had lusted over Mary ever since I had hit puberty a few years back.
We were both geeks/nerds in that school was important to us, but whenever Mary was around, my mind tended to go elsewhere. And now we had to work together.
My eyes kept dropping down to the crotch of her pants which were pulled tight up against her body. It formed a lovely camel-toe and I felt my cock begin to fill and lengthen down my leg. I noticed her eyes drop and widen at the sight and it became obvious we were both distracted. My own eyes widened in surprise as I noticed a small wet spot appear at her crotch.
Our project involved sexing fruit flies, so I grabbed a big magnifying glass and began looking intently in the jar of flies we had gathered.
"What are you doing?" Mary asked.
"I'm trying to see which of them has tiny cocks and tiny pussies," I joked.
Mary flushed, and said something under her breath. "I'm sorry, I didn't catch that," I said, though I had and just wanted her to repeat it.
"I said," she blushed, "that with some species, the gender is more obvious!" Staring at my growing cock had gotten her quite flustered.
"I see your point," I replied, staring pointedly at her crotch. "It would be a lot more fun and interesting if we could do this on something other than bugs."
Her eyes met mine as silence filled the room. Her hands played nervously with the button at her neck. My hands had become rather moist, so I rubbed them on my pants legs. I accidentally brushed my cock with my hand and it twitched, sending a small jet of pre-cum out of the head. Now I had my won little wet spot on my pants, though mine was a bit further down the leg than Mary's.
"Paul? Um... did you just... cum?" Mary asked hesitantly. I must have been a shade approaching infrared as I blushed.
"No. That was...um... pre-cum. I leak a lot sometimes when I'm excited."
Mary giggled a bit. "So you're excited now?
"Yeah," I confessed. "I've always been excited around you. Sometimes I have to run into the bathroom before it gets too obvious."
"Really?!? You get excited because of me? I've always gotten excited around you too, Paul. Sometimes my panties would get so wet, I'd need to change them when I got home!"
"Like now?" I teased. Her wet spot had really grown. As had mine.
She glanced down and saw the wet spot on her pants. "Oh no! I can't go home with a wet spot on my pants! My mom will think something happened and I'll get in trouble." She was near tears.
My voice was a near whisper as I suggested, "Well, you could take them off. I have a pair of shorts you could wear, and you could let them dry out."
"You should wear some shorts too, so your pants can dry as well," she replied pointing to my own wet spot.
I got a couple of pairs of gym shorts and she took hers into the bathroom as I quickly shucked out of underwear and jeans. They were short, but they should cover everything.