I had a relationship with 14 y/o girl as 19 years old

I'm asian 19M just moved to the western world to study. Have never been in a relationship, which made me feel kinda lonely and touch craving.

One day, I was waiting for the bus, a girl opened up to me and asked some stuff. We chatted a bit and she asked to get my ig. There is a thing that caucasian girls look older than their age, I asked her about her age and she said 14. I was kinda nervous at that moment but somehow I was like "nahh, maybe just normal talking nothing gonna be bad..." . We got eachother info and became friend.

At first we were just do normal cultural exchange talking, music, food, etc.. Then she admitted that she has "yellow fever" (the thing for asian), then from that moment on she kept trying to hit on me and after 2 weeks, it worked... I knew it was wrong but for some reasons, a part of me felt like, this is the first time I got someone that really cared about me like this girl, if nothing bad gonna happens then alright, we began dating.

After a week, it was her 15th Bday and we decided to have our first date. During the relationship, we just do cuddles, hugging, hanging out /w together, etc... Then she became a bit more "freaky" day by day. First she talked about her kink, desire and then she wanted us to do some dirty talks. I really don't like doing it but I was just scared I might upset her because she asked it so many times and I refused it all the time. We did some dirty talks for some days then one day she asked to make love. I immediately said no then she got pretty pissed, the following day, she kept sending me some erotic pics and asking to do that stuff, but i never did anything sexual back to her.

I wanted to stop chatting to her because I understood what I have been doing was terrible, but also another part of me afraid that I will lose a person that cares about me, so we kept having the relationship for another short period of time. One day, I felt so guilty that I ruined a kid life, I get a random reason that I am going through some stuff and we just became less and less chatting to eachother. Finally, I told her to have fun or date someone her age, wished her all the best and we never talked again.

I'm still feeling really bad that I ruined a minor, idk if one day she gonna blackmail me or not but I feel whatever it comes, it's deserved. Thanks for reading.