Boyfriend lies

When my bf is out of money from helping me pay bills and buy groceries. He asks his mom for money . Then he lies it’s says it for my 5 year old daughter ( says she needs medicine) and now we have a 2 month old daughter ( says she needs pampers) when in fact that’s a damn lie , anything my kids need he buys , myself or my mom . I don’t get along with his mom and after she sends him the money she calls their whole family and says “ oh I had to give such and such money today for the kids . One of the reasons my kids don’t go around her .

Or he lies to his manager when he doesn’t feel like going to work and says “ oh my daughter has to go to the hospital or something “

I’m getting sick of him lying

She’s doesn’t be around my kids because she had mouths me to my 5 year old , lied to my bf with both of my kids saying they aren’t his , has never treated me like family and tries to get my bf to leave me because he was helping her pay bills before we got together now he can’t because he helps me , when he got a big lump sum of money last year she changed his address to her address so I wouldn’t know about the money and he could spend it on her