A: Lifelong Friend
Criticizes you constantly.
Actively reminds you of regrets from your past.
Refuses to recognize your personal growth.
B: Friend of a friend
You feel excited to be around him.
Usually has a kind thing to say about everyone.
Obviously smarter than you.
Life can suck; many things are out of your control and decisions can be difficult to make. Like choosing who to surround yourself with (disengage from poisonous relationships and engage those that make you feel good about you). Airbnb is a good friend. The choice is easy and completely in your control.