All three of them are nuts. They're women! ZING! Amirite guys?
I don't trust Bogan at all. But I definitely believe Ashlii. Do I think it was one-sided or she's some innocent babe in the woods? No, it takes two to tango - but someone's got to lead. But we've got evidence he took a 3-week vacation to cheat on her, leaving her alone with their kid over thanksgiving so he could jack it to Bogan's feet, he still lies about it (while using weasel words and turns of phrase so he's not TECHNICALLY lying about) so yeah, I'm not really willing to believe his end of things about this weird anime love triangle.
Like you said, Richard has a hair temper. He still froths like two decades later when called out about his MLM juice scam, and doesn't last very long in any conversation he can't ban people from, so I can see how he'd be a delight to be in a relationship with.