Fair point.
Here's the archive of Vinny's post about him sleeping with Mike's then-girlfriend, and
here's the original link which shows the thread still up. (I'm getting a DDOS error when I try to go to the site, but I posted this same link a few weeks ago and it worked then, so I'm sure at least one person saw it and can confirm it was indeed real.)
Proof of his hooking up is much harder to come by due to his aforementioned paranoia, but pretty much any fan pre-Twitch can tell you he was known for hitting on female fans and that there were multiple incidents where a fan he was hooking up with either let something slip or went public in an effort to shame him/brag about it. Still, if you read back through the thread from around 2019/early 2020, there was quite a bit of discussion of all of this.