<human>: GF and I broke up last summer. Had spoken with them briefly off and on until the holidays. They suddenly cut me off. About a month after, I got a nasty three line email and a photo, telling me they couldn't be my friend because they had gotten back together with an exBF. 

I was upset by the break-up and by losing the friend, but why send the email? 

Has anyone else experienced this? I suspect the new-old partner is now harassing me, but can't really prove it. I don't know him except through her. I'm over the break-up, but I feel a little hurt about that email and I am extremely upset over the annoying messages reminding me he "won" I guess? 

I am curious what you did or how you coped with it if someone sort of rubbed it in after the fact that you didn't measure up as a partner and they went back to the pretty classic asshole because of it. Just for clarification, they had been broken up for three or four years in between them dating and us dating. And I listened on youtube to How I earned my bitter badge this weekend and wondered if this was one of my stories.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Just wondering why someone would "rub it in" months after a breakup that they had gone back to an abusive partner?