Virgo-woman and Cancer-man after-breakup-drama problems.

So, 2 of my friends(both a Virgo and Cancer) have been passive-aggresively at eachother's throats(through social media stalking, harrassment, ect.) for 5 years now since their breakup. The reason? The virgo wasn't being straightfoward with him & about what she didn't like about her cancer man and kept talking trash about him behind his back. He always was paranoid and kept asking her what he should fix about himself(he was very clingy and a little possesive. But he never kept her from hanging out with who she wanted to, or doing what she wanted. Although he DID let her know when he didn't like it.) Eventually, he got curious and found out she was taking-trash about him. He went FUBAR angry. There was a falling out. He begged for her back. She came back eventually. Then a similar thing happened after awhile, she left him again(what she made clear for good) after trying to get her back, he eventually accepted his fate and said his final farewells. He started to move on with another-girl and talk shit to one of her friends during this gap, after awhile he broke-up with this new girl and started pushing away everyone close to him. Then she suddenly came crawling back to him around two months later. They were together again. Only to find out later that he moved on the 2nd time she left, but eventually(as stated before) he broke up with the new girl he almost moved/on to..LONG BEFORE she(the virgo) came back to him. Why? because he wasn't able to keep the virgo(his ex) out of his head(What is oddly convenient is: shortly after he left this new girl, his ex came back.) As a result of finding out, she felt all betrayed and used by him because of it & she found out he also talked shit about her & exposed secrets to get back at her for the excact same thing(talking shit about HIM and exposing his secrets), & for the mind games she pulled with him to try to appease him instead of being honest early on(when he asked why, she would always say she was afraid of how he might react. Yet, I know he would never hurt her unless she backstabbed him. He tried begging for forgiveness but nope. So now ever since then, its been heII between the two. He(the cancer)wallows in self-pity, regret, guilt, and won't let go of her(even though he knows she was wrong too)
& She(the virgo) tries to forget him, keep talking shit, hates him, acts like the innocent-victim and keeps bugging him to stop self-pitying and "leave her and he friends alone" when from what I observed, it is they who keep coming after him and look for a reaction. She has a very messed up life & so does he. I'm not taking sides, but I want these two to just stop. I know they'll never truly "get over it" or blow it over. So is there any other way I can fix this? I've tried getting them to see it was a huge misunderstanding and make up. (Did not work. The Virgo kept resisting.) I've tried therapy(did not work at all, the Cancer kept resisting.). I've even tried getting them to get law-enforcement involved! HELP

You could opt for the truth.

Dear you two idiots, this is stupid, and I feel like I'm watching Mean Girls in real life.

Cancer boy, newborns have bigger balls than you, she's poison, get off the crazy train and cull your friend herd to people who actually give a shit if you live or die, because your ex doesn't.

Virgo Chick, If you are still following his ass around but you don't want him, bitch you are a fan. The smell of desperate and obsessed reeks off of you and will probably kill any relationship you could have with someone who is worthy of your time.

But hey, if you two morons want to keep going at it like teenagers in high school, I'm going to be over here munching popcorn and acting like an adult.

Posted by Gennie
You could opt for the truth.

Dear you two idiots, this is stupid, and I feel like I'm watching Mean Girls in real life.

Cancer boy, newborns have bigger balls than you, she's poison, get off the crazy train and cull your friend herd to people who actually give a shit if you live or die, because your ex doesn't.

Virgo Chick, If you are still following his ass around but you don't want him, bitch you are a fan. The smell of desperate and obsessed reeks off of you and will probably kill any relationship you could have with someone who is worthy of your time.

But hey, if you two morons want to keep going at it like teenagers in high school, I'm going to be over here munching popcorn and acting like an adult.

Welp I have news. She deleted all her social media. But not much else is known.

How do two passive aggressive people get along though?
What should happen? How to solve this?