Lee Know-ex

You don't have a father. One day, your mother introduces you to her boyfriend and you find out that her boyfriend is actually the father of your ex, Lee Know, but you don't tell your mother this and a few months later, your mother marries that man. It's been a few days since you got married and now you and your ex-boyfriend are Minho's half-siblings and have to live in the same house. You went to the kitchen to get water and there he was

Half-brother lee know but ex