They talk about you behind your back?

A true friend would never jeopardize your friendship or humiliate you like that by stabbing you in the back.

They throw you under the bus.

They don't vouch for you, they don't take your side and they certainly don't stick up for you when someone is hurting or belittling you, they constantly cancel on you.

You've had to learn the hard way over and over again, that you can't ever count on them to come through for you.

They exclude you from their plans.

Even if you go out of your way to invite them or tell them about your plans, they just don't do the same for you.

They call just to ask you for favors, fake friends think it's okay to go to for weeks only to pop up and ask you for a favor.

They give you backhanded compliments, It shows that they are jealous of you and that they judge you more harshly than they want to let on.

They only talk about themselves.

The communication between you two feels largely one sided because fake friends are self absorbed and inconsiderate.

They don't care much about you or what you have to say.