I was on my way home when I saw my sister's friend Irina who was standing at our house. She was waiting for my sis so I just asked her to come in, because it was quite cold outside. She offered to make a tea and I decided to jack off while she was away but she noticed what I was doing and became very curious about that big thing covered with veins that was sticking out of my jeans. She said that she is a virgin and had never seen anything like this before. I offered her to try some amazing tricks that my cock can do with her pussy. Her curiosity and lust lead to hours of fucking that were wilder and wilder with every stroke after the hymen was broken.