My cousin made me cum in my boxer (MF)

Soooo, this happened a good number of years ago. I had an apartment that I lived in, where I had an extra bedroom/office. My cousin who came from another city studied where I lived. Due to a leak in the apartment she shared with some friends, she had to stay with me for a few weeks while her place was fixed.
It did not mind as I had and have a very good relationship with her. At the same time she was incredibly hot and very cool girl. I guess I was what you might call a little fascinated by her at the time. We were both students which meant that there were quite a few late evenings and lazy mornings.
One morning she came into my room dressed in only a t-shirt and g-string. I had a 150 cm wide bed that stood next to a wall. I was lying on my side furthest from the wall. She lay in bed with her legs up against the wall and her head on top of my thighs and started talking about everyday things. Here I just have to inform that I am a foot guy.
The sight of her lovely long legs up the wall made me instant horny. I felt my cock begin to rise under the duvet right by her face. She must have felt that because she changed position a bit and moved even closer. As she talked, she moved her feet around and did different things. Sometimes she took a kind of split so that one foot was right in front of my face. All I wanted was to grab it to suck on her delicious toes. Suck on them and lick her sole. But I did not dare.
At the same time as she moved, I did the same with my hip. Which made me massage my cock calmly under the duvet and the boxer, but against the side of her face. After a while she moved again so that she lay with her feet right in front of me. Now I could feel the smell of her feet and I had to use all my strength and not stuff her toes into my mouth and suck on them.
As I squirted I changed direction to the side. When I moved I pretended I lost my balance and landed with my face in her feet with my tongue out. I licked a little of the sole and a big toe. She started laughing at how clumsy I was.
I apologized and went to the bathroom. There I switched to a new boxer and I jerked of another load with the taste of her feet in my mouth.

Never managed to let go of the thought of what could have happened if I had started licking her feet.

Source: reddit.com/r/eroticliterature/comments/rzdfb7/my_cousin_made_me_cum_in_my_boxer_mf