I'm dating my best friends sister

school

I was dropped off at school and Jenna asked if I was going to walk her to class. I said yea if we kiss in front of your brother. That guy thinks he know everything. She said ok. When Jack saw us he walked over to me and said I thought I told you to get loss. I said back off bitch. Jack shoved me and a crowd of people surrounded us. Jenna stepped in between us and said stop trying to fight and let's get to class. We arrived in chemistry and my lab partner was Jenna. She asked me if I was going to be her first. I said first what. Don't get me wrong I'm not a virgin but she was a freak. I laughed and said sure thinking she was playing. After school she came to my house and we studied for the test. She closed the book and climbed on top of me. She took off her clothes and started kissing me. She said stick your Dick in I said don't u need a condom. She said no we trust each other. I said hell no you not about to get pregnant for me. She said your such a wimpy. I went in my box of condoms and grabbed the best one Trojan bear skin. She moaned for 50 minutes then we stoped. She said I'm about to go take a shower you coming. I made a joke and said I already have. She laughed. The room was a mess. My mom was going to home soon and Jenna's brother Jack was going to be here soon. Jenna drove home and I cleaned up.