I have been in contact with my ex boyfriend and I didn't mention that i am currently in a relationship because i thought what kind of a ***** i am that I just hook guys up and stuff. Now the conversations were friendly and like old times. From my side, it was just friendly. When my bf asked me if i was still in touch with my ex, i forgot that i was and said i haven't been since the last 2 years. He by mistake saw the chat where I had conversed with ex a month ago and he didn't believe i had forgotten. On top of that i lied that i had told my ex i was in a relationship and faked a conversation with my friend where she corroborates that i had told my ex about my bf. I am a horrible person I know. I was trying to cover up my lies to dissolve the matter but i got aggressive with my bf when he didn't believe my fake chat to make him believe it was true. Also I hung out with people he didn't like and lied that i hadn't. Now he hates me and can't trust me naturally. He has emotionally broken up with me and he absolutely loathes me. I promised him I wouldn't lie to him again and i haven't in the last 4 days (since i made the promise). He is still not believing me and he still hates me. What should I do? How can I gain back his trust and get the relationship back to normal?