<human>: Can you condense the text into a few key points?

I think he wont talk with me again. 

I made force him to tell me things about him self with another girl. 
We use to constantly argue about me trying to know about it and he not responding. 
 
We are in a relationship for about 4 years. Our relationship is like a open relationship, because he believes thats the only way. He believes that everyone should be free to do whatever wants to do, even go out with another person. 

I im very insecurity about it. I am afraid to be in a open relationship.
Well, that i know, he just was with one another girl since we are together. And in that time i was not prepared to deal with it. Since then we never talked a lot about it, just sometimes, when i ask something (like if they saw each other more times) and he refuses to answer me (he tells that he dont want to encourage me to be more jealous) But im. So i constantly ask him something about and that always take us to a argue.  

So today i made force him to answer my questions. I made give him a ultimate or something. 
 
I really believe that if i knew that things I will be more calm and more chill. But i could have created a big problem between us. :/ 
Im really sad
And sorry about my english... Isnt my first language!
<bot>: i think i crossed a line with my SO forcing him to answer some questions about him with another girl and dont know what to do now.