I was 15 when I met my ex, 16 when we split up.

I’m now 23 and I still think about him daily. I dont know what is going on with his life, I havent seen him
for about a year or more. I would like to contact him but have no address other than his mother’s, and I know he doesnt live at home anymore.

Should I contact him and tell him I still think about him and maybe still love him or should I leave him be? Maybe he still thinks about me? I was stupid to let him go and I broke his heart, I was young and didnt understand love and relationships. Now I know he was the one for me, but do I contact him and risk upsetting him or myself?