<human>: Give me a shortened version of the text

I have been with my SO for over two years now. He just confided in me that most of what he told me about his past was a lie. 

The lies He told me he included that he had two degrees from a reputable college, had occupied high up positions in companies, had multiple healthy long term relationships before me, and had traveled the world on business trips.

Recently he told me that all of that was a lie. He suffered an emotional and physical trauma in his teens that caused him emotional problems (I won't go into it as it is personal and I would like to keep this fairly general). These ruined his life, and stopped what he thought should have been his life from happening.

He had gone to a state school and never graduated, he never occupied important positions (though he did work where he said, just in normal level positions.) his relationships were a lie, and he had never been out of the US. 

His lies permeate every aspect of our life. Not only did he lie to me, but also my parents, and our friends. And I am expected to keep these lies secret from everyone.

He sees telling me as a sign of trust in me and doesn't think it should take me a long time to get over. I hate that he lied to me, but even worse is that for 2 years I unknowingly lied to everyone about him. And now I have to knowingly continue that. 

I don't want to leave him, or maybe I do. I don't know. Day to day our lives are great. He stands by me through my troubles, he truly is one of the most brilliant people I know, we have the same interests, and make each other happy (with very few problems aside from this) I really thought I was going to marry this guy. But I don't think I can deal with the lies. Should I leave him?
<bot>: Lived with a guy for 2 years who just told me that most of his life is a lie. He expects me to continue the lie for him.