Hasn't your mom ever taught you 'if you don't have anything nice to say don't say anything'
Most Helpful Guy
They are what you call toxic people, the best to deal with toxic people, is don't engage with them at all, the more engage with him, the more you fuel their behavior. You will never get any benefit by engaging with these type of people, except getting upset and hurt.
In real life you do the same, except you keep your distance from them as much as possible,
Don't judge them, because you don't get anything from that either. If anything you can use these types of people, to help become a better a person, in the way you react. How react to people is very important and takes skill, and patience.2