Long time lurker, first time poster. Be gentle :)
This is one of my fondest memories of the time with an ex girlfriend of mine, as well as one of the most adventurous! Names omitted to protect privacy.
Backstory: My girlfriend (18) at the time and I (21) had recently started dating. She was 5'6, with a thin and tight body, curly brown hair, and a b cup. I, on the other hand, am 5'9, thin but well muscled, with dark brown hair, blue eyes, and measure 8.5 in for those who are curious. The dynamic was a typical one. I, the older of the two of us, and male, had a fair amount of sexual experience under my belt. She, the younger and a virgin, had no physical experience beyond toys, but was now sexually adventurous and experimental like no one I had ever met, for this I thank the internet. Our sex life was a series of one act of increasing debauchery after another.