Have you ever been heartbroken cuz of your bf/crush that likes your sibling but still played with yo

Cuz if you have ma boi I feel you..
My crush, well I thought we had mutual feelings cuz he was being way too nice and close with me. And here I thought he was in love with me.
Acc he acted like that so that he could get close to ma sis, at that time I had no idea. Tbh ma sis was like the pretty girl at school and everyone liked her. What hurt me the most was I was too diep in love with him and my friends aways told me not to go near him he is no good. Idoit me I thought they were just jealous and stuff. My last memory of him was when he confessed to me but guess what. Before that he confessed to my sis than her best friend and they both rejected him sooo he came to me. I felt so betrayed!! In my mind it was always him him and him. Okey if he didn't liked me but to pretend as if he cares about me so that he could tear my feelings apart. Back to confessing time :: I was so maddd I took the card while he gave me asking" wil you be my girlfriend?" Those were the words that I wanted to hear for 3 whole years however at that timeit was more like a knife that directed directly to my heart. I threw his card ( on the card there was beauty and the beast pic also when you opend it. It made some sound I dunno what but surly it did) and I said" In your dreams". After that it was summer vacation or some other vacation. It was the last memory of him in my life. He went to his home (country-side) and yeah since then its been almost 10 years and now i dunno if I am over him but what I know is that I have never loved someone else like I did to him.