<human>: We broke up about 3 weeks ago, it wasnt really working anymore. I tried really hard but he couldnt show any affection or interest. ( we were also LDR)

weve been talking a bit since then, every few days. he asked me if i wanted to give it another try, i told him that things would have to change and he understood. 

we got in a sort of fight, when i didnt wanna tell him who i went to the movies with ( it was my mom) and he thought it was a guy i had casual sex with before we even met. 

We didnt talk for a few days and then all of a sudden he asks who i was with even though i already told him that.

Three days later ( 2am this morning) he asks me when i added 'J' on facebook again ( i deleted 'J' because of him) and i said a couple of weeks ago. 

The thing is that my ex basically cheated on me with a girl online. He asked her if she wanted to sext again. To me that is cheating. He also added her again after 2 months and kept talking to her even though i told him i didhnt like it.  He said i cheated on him with 'J' by having sex when we met. Yes i had sex with 'J' before i met him but i told 'J' that i couldnt do it anymore as soon as i knew that i liked him ( my ex) more than a Friend.

What is going on?!

Can you give me a shortened version of the text?
<bot>: Broke up with my ex who cheated on me, he keeps asking about a guy i had sex with before i even met my now ex, he acts super jealous and thinks i was cheating on him.