1. Asks You to Change Your Appearance

He shouldn't ask you to cover up your body more, or to wear more revealing clothes. Either way, he's being inappropriate. You're in charge of your own body, which means you're the only one who has a say in what you choose to wear. If he makes a nasty comment about the way you dress, how much you weigh, or the color of your hair, you don't need him.
2. Asks You to Give up on Your Dreams

Your man should support you in whatever you decide to do. If you want to become a singer, then he should back you up. He might give you realistic advice about trying to find a side job to make money until your singing pays off. However, he should never encourage you to drop your dreams completely.
3. Refuses to Meet Your Family and Friends

Yes, it's a big step to meet someone's parents. Yes, it's scary to know you're making a huge commitment. However, if he really loved you, he'd agree to meet your family after a few months. If he doesn't want anything to do with them, then something is wrong.
4. Repetitively Cheats on You

If he really loved you, then he'd resist the urge to cheat. Some couples can recover from it, but the majority of them can't. After all, your partner should be so concerned with your happiness that they'd never even dream of cheating. If he actually goes through with it, then you deserve better.
5. Purposely Embarrasses You
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If he embarrasses you on accident, you can forgive him. However, if he purposely puts you on the spot, or tells his friends crazy stories about you, then he doesn't deserve that forgiveness. Your sadness should rub off on him. If he doesn't care about making a fool out of you, then he doesn't love you enough.
6. Keeps Your Relationship a Secret

Unless you're dating someone from work, and aren't actually allowed to tell anyone you're together, then there's no reason to keep your relationship a secret. He should be proud to date you. He should hold your hand and kiss you without worrying about who sees him. If he wants to keep you a secret, you have to ask yourself why a man who really loved you would do such a thing.
7. Hits You or Threatens You

Never remain in a relationship that involves physical violence. If he hits you or shoves you, then it should be your cue to break up with him.
Even if you're in a same-sex relationship, you shouldn't tolerate violence. Getting hit by a girl is just as bad as getting hit by a guy. The gender shouldn't make a difference.