I meet a lot of people in my life, keep a distance from anyone in my life, but only want to meet you

I used to be really simple, and I was happier than now. (13 years ago) I don’t know why life made me see the dark side, and made my pure white heart stained with blood.It took me a long time to change back to myself, and then I started to be wary of people's hearts.They, they really hurt us too much.It hurt me so much that I changed.Right now, I miss him so much.The wind and rain are not so hard because of his company