She is asking money and she isn’t his girlfriend

I’m with this guy he has a daughter he paid everything for his daughter but the mom of this girl she always hey can you borrow me some money and he said yes she never paid him back he said that is his mother’s daughter I said you paid everything she is going to the mall but things make up and all the shit and me I’m a simple women that I have to work really hard for my bills we aren’t living together but I think is a bullshit she said oooohh I bough I dress for your daughter it was $150 but I forget to the receipt and he just give it to her the Money I’m not mad because he paid for his daughter but I think she is getting benefits from him even she has her boyfriend by the way she work at the bar and had a part time I work 7 days a week really hard and I have never ask him anything what should I have to do ? Do I have to just keep going and lit my boyfriend to do the things like that or what do you girls think?