What are some red flags to look for early in a relationship?

They can’t stop telling you how perfect you are.
Their sex drive is much higher or lower than yours.
They rush a new relationship forward too quickly.
They try to drive a wedge between you and your family and friends.
They describe all their exes as “crazy” (without rational explanations).
They call you names in arguments.
They’re secretive about little things.
Their attitude changes on a dime.