Beginning in Love hate relationship

So , it began 7 years ago, in 2014. I was 20 years old back then. I just completed my school life and was starting my higher studies.
I used to be an introvert without many friends. But I used to chat with so many strangers. I met this guy who was also the same age as me in Facebook. (I will call him ‘TU’‘ hereon) .
So, we started chatting in messenger. Then we shared phone numbers. He called me. I answered. Soon we started talking about more intimate stuff. We were sexting like a long term couple.
This wasn’t normal in our society.