help me

how can I get over a 5 year relationship with a 9 month daughter & a son on the way.. it hurts but lately my child father has been acting like he doesnt care and doesnt see the wrong in anythin he does.. he dont text back when he dont feel like it , sometimes ignore my calls, when then says he not discussin anythin im always arguing, i have previous trust issues due to past infidelity, and recently he told me he dont wana move in wit me but he will get me an apartment and i HAD ENOUGH ! i cant allow it nomore the way i have to constantly tell him what not to do and what to do and make him try to c a future wit us and the kids he stuck in his ways & its a hard pill to swallow when u love someone but I feel like im disrespecting myself allowing someone to treat me so beneath & little or has if i dont have feelings i have to walk away!!! now he is a good father so i dont take it away from him but hes thinks he can do all this stuff in a relationship & continue talkin regular like nothin happened or he dont have to fix his ways