My first time with my best friends sister, who was also a virgin [MF]

Long time lurker time, first-time poster.

So a bit of background on myself. I’m from the US and originally from South Asia. I grew up a relatively Asian life with good grades, being bad at sports, and always lacking in the women’s department. Around when I was 10 I became really good best friends with a guy who was in the same school as me. Unfortunately, he moved away a year or so later but our parents became good friends so we would always meet up all the time and our families started to get closer. He had one older sister who would always hang out with us since I had 1 older sister as well and the 4 of us hung out all the time. I never really had any sort of feelings for her in that way and honestly, we were so young that I didn’t even think about it.

A bit of time goes by and I get caught up trying to get to college so I’m disconnected from them and behold like 3 years later when we meet up she has completely changed. She is ridiculously hot and I cannot stop thinking about her. At that time I was already talking to someone so I decided I wouldn’t pursue anything and it being my best friend of so long sister I didn’t think I had a chance.