#2 Behaves like a friend
Does your new girlfriend behave like a friend now and then? She hugs you and cuddles you, and then pushes you away and tells you it’s all happening too fast and she’s not ready for it?
Ouch, any girl who behaves like a girlfriend but prefers to stay friends is obviously using your love and affection to feel better about herself.
#3 Her friends don’t know you
When a girl uses you, there’s a good chance you’re never going to meet any of her friends. But if you both do bump into a good friend of hers, does her friend even realize who you are?
And if you see her with a group of her friends and not one person recognizes your name, you’re in serious trouble of being played into a game of I’ll-suck-the-life-outta-you.