The song "Not Her" by Erika Costell is about reassuring a love interest that she is not like his past relationship that caused him pain. The lyrics express Erika's commitment to the person and her desire to show him what real love is like. The song begins with Erika telling the boy that although there are other girls around, he doesn't need to worry because she would never betray him or treat him poorly. She emphasizes their close bond and her strong feelings for him. Erika continues to reiterate that she is not like his previous partner who hurt him, apologizing for his past pain. She pleads with him not to blame her for the mistakes of someone else because their relationship is different. Erika wants to make it clear that she is not the cause of his past hurt and shouldn't be held accountable for it. She reassures him that they both have their reasons for being in this relationship, but their emotions are beyond their control. While he may fear her leaving, she promises to always be there for him. The chorus repeats the notion that Erika is not the same as his ex, emphasizing her commitment and desire for a healthy and loving relationship. She urges him to give her time to show him how she can love him right. In the second verse, Erika reaffirms that she would never do the things his ex did to him. She brings up the history they share and the struggles they have overcome together, asking him not to associate her with the pain he experienced in the past. As the song progresses, Erika asks the boy what she needs to do to prove her loyalty and love to him. She wants him to know that she would never break his heart like his previous partner did. Overall, "Not Her" is a heartfelt song by Erika Costell where she reassures her love interest that she is not like his past relationship and is committed to treating him better. She wants to be understood as someone who will love and support him, separate from the pain he has experienced before.