I started developing love for him and then I promised my self to be his mother

Good evening mamas and pap's in the house... Please I need your urgent advice and prayers. This is the 4th year of marriage to a man who Lost his first wife during child birth, he has no mother biological sister but 4 brothers so I married him really not out of love but pity and later I started developing love for him and then I promised my self to be his mother, friend and sister he didn't have and managing life with him I have 2kids and an early stage pregnancy but this man has Neva admired me for once nothing I do that seems good to him he makes me feel inferior with his words, he has Neva encouraged me but he admires other people in my presence though he buys me gifts sometimes when ever he does something and I talk to him about it he will tell me to either believe the one he said or leave it and I have been leaving wit him in peace like that but the one he did recently that made me almost go mad was sleeping with my niece that is staying with me under the same roof I found out that she no longer respect me,she no longer carry out my orders so I decided to send her back only for her to call and start asking for forgiveness for what my hubby did to her and she has even told her mum and other of my siblings... Now my hubby denied it crying that it's not true but I just hated him to d core I no longer have any feelings for him he irritates me since then tears has been my food, terminating the pregnancy and divorcing him or even committing suicide his always Been coming to my mind... I'm so tired Pls my people help a bleeding hrt, help a Frustrated soul please... Thanks all