finding out [M]y ex showed everyone my cock

About five years into my relationship with my ex (let’s call her A), we were hanging out with her best friend (let’s call her B) who had just started dating a new guy. A few minutes into the conversation, B starts complaining about her new boyfriend’s small cock. A, trying to be supportive, tells her that size doesn’t matter, so she can still have great sex. B, annoyed, yells to A that she is just saying that because Ej (me) has a big dick.

Immediately after saying this, B covers her mouth with her and A is hiding her face in her palms. I, being bewildered, joking ask, “And how do you know?”

B looks at A who tells her to go ahead and admit it. B then begins to tell me that A has been sending her ever dick pic and video I have sent her over the years. She tells me that they have talked about my dick so many times and that she occasionally looks back at my pics (especially after her bf sends her some of his own).