Very short confession, I was just reminded of from a question somewhere else:
My fwb was having sex with another girl and she sent me a vid of herself cumming on the other girls tongue and told me to send back a vid of me playing with myself after watching it so she could show this other girl. I also sent a video later on in the night of me cumming.
Source: reddit.com/r/gonewildstories/comments/111cwnv/i_let_my_fwb_show_the_girl_she_was_having_sex