[M]y first threesome with my ex [F] and her [F]riend

I’m a 23 year old guy, with very less sexual experience (atleast I was at the time this happened). I had moved to another city this May for my summer internship. My ex (let’s call her Sonya) girlfriend, who I’m good friends with now (also the only girl I’d had sex with a few times) lives in the city too and helped me find a place to spend the 2 months with her friends, all girls. They had this rented apartment with 4 rooms. One room was vacant so they (after a lot of discussion) let me take that. They 2 out of the 3 girls weren’t very comfortable living with a guy but we convinced them somehow.

So I move in. 2 of these girls were super nerds and always in their rooms studying so I never even saw them a lot but the third girl (Kim, for the story) was a very hot college girl who used to attract a lot of boys over to the apartment almost every evening, who wanted to ‘hang out’ with her coz they loved her ‘company’. I’m no Ryan Gosling but I’m a decent looking guy, 5’11”, well built. These other dudes always looked at me like an ‘outsider’ who came in and started living with the girl they were tryna smash. So all I used to get were stares and sarcastic taunts to whatever I said. This made me stay in my room and mind my own business most of the time.