S/he is often apologetic about the behavior of his/her dating partner, makes excuses for them, or claims that others "just don't understand him/her."

S/he seems to lose interest in activities s/he used to enjoy and/or stops spending time with friends or family.

Her/his dating partner makes all of the decisions in the relationship, controls her/his behavior, checks up on his/her whereabouts, calls more frequently than normal, demands to know how every minute apart is spent, etc.

Her/his dating partner is extremely jealous.

Her/his dating partner insults, humiliates or puts her/him down in front of others.

S/he has unexplained injuries -- or the explanations s/he offers don't make sense.

His/her dating partner pressures her/him for sex or to move the relationships more quickly than s/he is comfortable with.

Her/his dating partner is not thought of highly by her/his other friends, teachers, family members, etc.

S/he is ever genuinely frightened or physically harmed by her/his partner.

Her/his dating partner ever threatens to harm her/him.