I were doing Painful sex in doggy style with my friend at home

My name is Kumar and this incident happened 7 years back. I don't know how to tell the story. When I was studying college, I used to go to dance class. One new girl came to the dance class. Her name was Mahalaxmi. She is the heroine of the story. So, Mahalaxmi came to the dance class. Already her sister was in the dance class. Mahalaxmi joined as a new girl. She looked very cute and had a naughty smile. She had a figure of 36-28-34, it was very attractive to everyone. Everyone used to ogle at her repeatedly. She used to be jolly with everyone. Some days passed and we became very close friends. We used to talk daily in dance class, but I didn't have her number. Usually, girls' class would be over around 8:30 and boys used to talk some nonsense and leave around 9 o'clock. On Friday, there was a dance show, so we practiced till 10 o'clock. Only a few students were there. So the girls started to go home and we were talking about Friday's dance show.