Did i do something wrong here?

I began living with my bf in my apartment, I was only ok with one of his homeless friends staying with us because they were staying together until my boyfriend lost his apartment. A month goes by and he invites another guy that I do not know to live in my apartment but he told me it was just to help with exercise but I end finding out this friend was actually going to live there so he lied to me. I eventually agreed even though I didn't like it some time went by and my boyfriend starts accusing me of looking at this friend I do not even know since the first time he brought to my attention I told him this friend needed to go if he was going to accuse me of stuff I'm not doing it'll make things uncomfortable which he did not. He felt I should tell his friend to leave if I really cared, but I didn't invite him to stay with us, he did but I eventually told his friend I needed him to go but when I did my boyfriend told him no I don't understand why and afterwards he started to believe I had sexual relations with this person
I told him no but he couldn't believe me. I told him I would take a polygraph to prove my innocence he agreed and I spend 300 for this. I passed the test of not only having anything to do with his friend but his homeless friend as well and the other things he accused me of. Now, everything was ok after that until I told him that I prayed that everything would be right with him after this, I prayed for my nervousness not to effect the test because I read that it does but also that it doesn't . I told him that I prayed I wouldn't get a false positive or false negative because I also read about it, It's my first time taking a such test I was looking for accuracy and how it's done to know what I'm expecting but he started to believe otherwise he says I shouldn't have told him about the falsies or being nervous because he feels different about my passing the test. I still want to be with him but I also don't because I was wronged by him until this test that I spent 300 to do to prove to him