I had a previous co-founder have an outburst like this and I immediately cut all ties. It was one of the most astonishing un-professional things I'd ever exper

I had a previous co-founder have an outburst like this and I immediately cut all ties. It was one of the most astonishing un-professional things I'd ever experienced. It also hurt deeply because I'd largely considered this person to be my friend, until they started sending me threatening texts filled with vitriolic threats basically because things hadn't worked out for our concept. I believe mental health problems may have been the root of this, but it was a really bizarre experience. I took a break from doing startup anything for about a year after that happened - I still have trust issues as a result of this experience. For anyone who thinks "radical honesty" or BS like that is effective in life or business, you're just going to look like an immature asshole or someone with serious mental issues.