how do i go about this ?

so me & my child father been together for 7 years we have 2 kids together.. he has always been providing and doing everything for us but I am not working currently .. he borrowed 2500 from me then $700 i had to pay his tickets he said he had alot of bills, then asked for $1500 & said i would get my money back which i believed because he normally do but its been 3 months & no money and i dont want to start an argument but i want my money back because im not working & i dont ask him for things so I want my own money .. i been taking out my savings to give to him i dont mind doing things for him and not expect the money back but that much i want it back... i feel like im down to my last & i want my money to plan my kids birthday & for us in general we not living together at the moment