Am i being unreasonable?

Leslie
Soooo..... I have 3 girls, my youngest daughters dad, is stressing me out. He wants to dictate what he spends on his daughter. Now, I'm not the type of mom to ask him for money, or things that she needs just to keep my money in my pocket. I'll buy all of them whatever, I just ask that he helps me when I fall short, or I don't have it. If i just spent my last $40 buying the baby the things that she needs for the week, and i need $20 for gas, i need him to give it to me. Then he says, it doesn't matter what I need its about what the baby need....well, the baby needs gas to get to her Dr's appointment...We're not together, and I understand perfectly that he has to "pay where he stays" and his money is partially obligated to his girlfriends household. But when I ask him to buy her some stride rites he hits me with I'm not spending that kinda money on those shoes...and he can go to Payless and get the same ones... 😒 really?? But if her washing machine breaks down, her car needs brakes, its tuesday, and its raining...he does it. Now mind u he hasn't bought her much because he wasn't working until she was about 3 months old... I bought her EVERYTHING that she needed. And since she's been born... He tries to find the cheap way out ta everything... If he can find a friend who has something used, he'll get it from them, opposed to actually spending money on his child. If he could get diapers off the back of the truck he would...I'm really at the point where I just wanna put in an order for child support, but I'm trying to give him the opportunity to do right, without the courts involvement... Am I being unreasonable here, or should I just follow thru with cs?