"Can I stay with you for just a week?" I started living with my friend's girlfriend for a week, with various reasons. At first, we were careful with each other, but after a few days, she borrowed my T-shirt without permission and got very excited when she was wearing no bra! We had fun like lovers and the distance between us quickly grew closer! Just then, I got a call from my friend! He asked me where my girlfriend was, and when I tried to confess honestly, she grabbed my erect penis and wouldn't let go, whispering, "Don't tell anyone..."?!