PLEASE HELP

Hi guys!!! I hope you are fine, I am looking for a manhwa I lost maybe 6 years ago or 5 I don't remember tbh I was a kid at the time and I didn't have an acc and I read it on another site, but I will be so glad if u know it and tell me the name, I believe it's a story between a man and I think he has a pink hair? And a girl who is older than him and their parents knew each other and so when he was born they were both promised to a marriage when they grew up, they loved each other when they were little kids but something happened and caused a misunderstanding between them, but the boy will still love her until they grow old and they meet each other to cancel the marriage and tell their parents, oh and they go to the same uni that's all I remember and I'm so tired looking for it, anyways if u know it please tell me I will be so happy tyy!!!