I'm the other woman

So I decided to post this topic because I want to let the ladies who are not in a relationship with the father of their child/children know that.... The other woman could never take your place as mother but we will take care of them as if they were our own. I do not have any children. This is my boyfriend and his 4 year old daughter. We will be a year into our relationship on May 23. I did not meet his daughter until 6 months into our relationship. (He is very protective of who he introduces to his daughter)  I never pressured him into meeting her or anything like that. I waited until he was comfortable enough to let me. I was a nervous wreck! I was more nervous in meeting her than I was his parents. What would I say to her? How do I introduce myself? Would she even like me?...I met her...and I instantly fell in love. although she was not my own it sure felt like it. We talked...she calls me the lady with the red car. No rush...call me anything you want. She started calling me baby after a couple of visits. She hears her father call me baby. She tells her mom that she played with baby and daddy. She learned my name and starts calling me lindsay. We have laughs...we go on trips..we go to the park. I make sure she eats and is comfortable. I drive safe with her, I comfort her when she's sad, I ask her if she's ok, she holds my hand, she gives me random hugs, she tells me I look pretty today. I could never be her mom, nor Will I pretend to be her mom. But I will take care of her as if she was my own. I am the other woman.