Many of the signs women are taught to interpret as caring, attentive, and romantic are actually early warning signs for future abuse. 
Some examples include: 
INTRUSION: Constantly asks you where you are going, who you are with, etc.
ISOLATION:  Insists that you spend all or most of your time together, cutting you off from friends and family.
POSSESSION AND JEALOUSY:  Accuses you of flirting/having sexual relationships with others; monitors your clothing/make-up. 
NEED FOR CONTROL: Displays extreme anger when things do not go his way; attempts to make all of your decisions.
UNKNOWN PASTS / NO RESPECT FOR WOMEN:  Secretive about past relationships; refers to women with negative remarks, etc.