How do I regain my partner's trust?

My partner and I met two years ago. We complemented each other in every way possible. We got along so well it was as though we have known each other for years. We did everything together and really enjoyed each other’s company. Approximately a month into our relationship he said there was something he had always wanted to ask me. My mind started wondering and somehow I suspected it was about our age since we had never discussed it. It had never crossed my mind that he might be younger than me, he looks much older than I am. When he told me his age I was suprised he was actually younger. When he asked me about my age I told him we were of the same age. I was scared thinking if I tell him the truth he would leave me not realising that he had already done some investigation. We however continued with our relationship but it was norl onger the same. One day we spoke about this again, but now he was very angry at me for not telling him the truth first time.

To make things worse the identity that I have currently is incorrect which makes me even older. There were valid reasons why it was changed since I couldnt get employment and was under age. I have benefited from that but it is now back firing on me. We all have family secrets that we are not proud about thus I couldnt have just told him that I was struggling didnt have money to further my studies thus had to find a job and the company took me to varsity. We agreed I was going to change it to my right age but on the other hand I am scared in case I loose all I have accumulated. I am so confused whether to go ahead change it since I do not have any guarantee this will fix our relationship and risk loosing my properties, ect. We have broken up a number of times because of this and got back together. He will be angry and not want to see me, and a month or so will come back want us to start all over. I know deep down in my heart he loves me and I love him too but this seems to have created a problem between us. How do I fix this, do I go ahead change my id or does he accepts me the way I am.