Does he actually care that hes lost my friendship -can we make up please help?

ive been friends with a man for 3 years, we got on so well until this year when i discovered he had been lying to me a lot. he made up some stories about owning an expensivebusiness and a sports car but told contradictions at the same time. hes in a lot of debt and ive helped him endlessly, he knows ive always been there for him and thats been a problem as he doesnt value me. recently he asked me to send an email from his account which i did and discovered hes been chatting online with a filipino girl and sending her money. last week she scammed him and hes cut up over it but has lied and told me she was english and never sent her anything but i saw the email ! its ruined the friendship which is sad and im really upset we were very close and i told him the friendship was through but i still have to work with him everyday. i wish we could sort it out but he will never admit the lies so what do i do shall i email him and sort it out or leave it ?