Jared who was the one who filed for divorce. Basically they were both sexual degenerates, who didn't want children. Heidi did cosplaying as well as designing clothes. She basically just lived off of Jared and attended conventions, those that get to know her find her basically repellant and she was known as a bitch to all of Jareds circle.
Because their relationship was on the rocks they opened up their relationship. Heidi would get her back blown out by BBC and actually had a trans idenified female (FTM) girlfriend for at least six months and Jared had a tumblr account called SinJared where he would trade nudes with his fans with zero vetting. Jared would also solicit sex from his fans at conventions. In 2019 when the drama broke there was a woman who posted on the Projared subreddit who did an AMA basically talking about how as soon as Projared nutted in her he left to go look at dusty NES cartridges at the convention. She said she felt used but ultimately felt better when she found out Heidi supported it.
Projared and a bunch of other similar YouTube gaming channels were doing collaborations. He worked with Game Grumps, Jirard, Jontron and was even in a collective with a bunch of them called NormalBoots before it died. Someone who worked with Game Grumps because he knew Arin Hanson/Egoraptor from making New Grounds flash animations back in the day, Ross O'Donovan had a wife called Holly Conrad who was a cosplayer who was trying to become efamous.
Projared was picked by Wizards of the Coast (owners of Dungeons and Dragons) to put together a team of anemic video games/convention influencer type people to host a twitch stream where they'd record Dungeons and Dragons sessions called 'Dice, Camera, Action!'. Projared picked Holly to be on the stream and they had a lot of chemistry, they often flirted.
Projared, because of his open relationship status started fucking Holly with his BWC, totally cucking Ross. Heidi tolerated this for a while because she's a degenerate BPD whore. I think the jury is out on whether or not Projared left Heidi for Holly - I actually believe that he left Heidi because she's a lazy bitch who would do nothing but sit around the house knitting and that he realised he had an endless supply of pussy from the parasocial internet weirdo group he was an ecelebrity of.
Projared and Heidi seek marriage counselling. The marriage counsellor sides with Jared because Heidi was nuts. Projared eventually ends up filing for divorce after him and Heidi don't speak for a couple of weeks. Apparently Heidi found out about the divorce from Twitter. I suspect that she'd threatened Jared before that he'd ruin her life. Essentially she saw that her meal ticket had run out and that she was basically fucked since she'd spent the past decade just living off of Jared not supporting herself.
When Heidi made her infamous tweets calling out Projared and Holly she didn't mention that they were in an open relationship and that she'd been railed by a bunch of dudes. She claimed Jared was cheating on her with Holly. This was really sensational and a bunch of the people that were in the weird tumblr SinJared sex group leaked dick pics of Jared as well as DM's.
There were two obese trannies who claimed to be underaged and claimed that Jared had groomed them. However they ended up being proven as liars. And they were also fat dudes which really isn't Jareds style. You can criticise him for a lot but he's not into fucking dudes.
After the drama died down and Jared with the help of BernieVids (Ex-mumkey jones fanboy and friend of Turkey Tom) who corrected the record he ended up dumping Holly who has been seething and bitter about it for ages. She has taken to vagueposting on Twitter about Jared since she ended up losing her career and was basically accused of being a homewrecking whore by the entire internet.
I don't even think that she cheated on Ross with Jared. There have been a bunch of people commenting that Ross who is Australian and works as a freelance animator basically just used marrying Holly as a way to become a US citizen or permanent resident. But who knows, Holly seems to be spiraling. Last year she tweeted that Ross raped her a bunch when they were married and then she deleted the tweet.
If you want a more comprehensive deep dive into the lore the Lolcow.farm threads are more active than the Kiwifarms thread since the Kiwifarms thread on the topic have been dead since about mid 2020.
It's probably a bit rude to shill another site but it's like Kiwifarms but in chan board format and the women there are a lot cattier than here and pay a lot more attention to Projared than Kiwifarms does.
Interestingly the head Janny for Projared Sad_Old_Magician and his wife GeraldoGuacamole who moved from Florida to Seattle like one month after the 2019 Projared Drama ended up keeping Holly as a friend after Jared pumped and dumped her. Sad_Old_Magician locked the Projared subreddit and GeraldoGuacamole left the Projared discord. Periodically Holly will post on her social media that she's hanging out with Sad Old Magician and his wife. I suspect that she has joined their reddit polycule.
One last thing to relate this back to The Completionist: When the Projared Scandal broke in 2019 Jirard immediately disassociated from Jared and publicly donated $15k to three different womens charities to get the heat off of him and the rest of Normal Boots. They left Jared for dead, meanwhile when Jirard gets busted for charity fraud Jared ran to his defense before even watching the expose videos.