My girlfriend at the time was in a marching band for a private southwest university. We had been dating about 6 months and hadn't even talked about having sex yet even though our times together were getting hotter and hotter. We had gone from making out to heavy petting to oral sex and I had decided it was time. The band happened to be playing in our hometown one weekend so we decided to go out to some of our favorite haunts after the football game. It was late September but still very hot. After the band played at halftime, they were taking a break under the bleachers so I decided to go pay a visit. It was obvious she was exhausted as sweat was pouring off of her and her hair matted to her neck and cheeks. She cursed the uniforms for being so hot (they were 100% wool) but kissed me anyway. I don't know what it was but her kiss was different. It was as if she sensed it too and gave me a look that I hadn't yet seen on her face and haven't seen since. (She is now my wife) It was a mixture of lust, anticipation, fear and vulnerability all rolled together that made her that much desirable. We agreed to meet at her mom's house afterwards. Now it just so happened her mothers air conditioning had gone out that morning so when we got there, she was anxious to shower, change, and then leave. I wasn't. She asked me to leave so she could undress and shower. I did but made sure I could peek through the door. She proceeded to take off the jacket and then the pants. When she bent over to take off her socks, that was it for me. I walked in, grabbed her from behind, and started grinding my crotch into her butt. At first, she protested but it was a very weak protest. She was already getting too horny to stop. We had been building up to this for weeks and we both knew it was time. I whispered in her ear that seeing her hot and sweaty turned me on like I never knew it could and that I was going to make love to her. She moaned her approval as I quickly took her bra off then pulled her panties down. She laid on the bed and spread her legs wide and up over her shoulders. I made a small attempt to insert my finger into her to open her up a little as this was her first time too but she shook her head and said there was no need for that. "I'm ready," she said. With that I stuck it in rather easily considering it was her first time. Must have been the sweat combined with her juices flowing that made it so easy. Anyway, I began to pump slowly at first, to get used to the rhythm. Then, we started pumping faster and faster, gyrating our hips in perfect unison. She came almost immediately and when she lost it, I lost it. I pulled out just in time to shoot what seemed like gallons of cum all over her belly and tits. Even though it lasted only a couple of minutes, we were both even more sweaty than before. We laid there in our afterglow slowly rubbing my cum into her skin. After that, we took a shower to hurry and get ready for going out. But once we got in the shower, we had to have each other again. So we blew off our friends and made love all night.