You married Taehyung because your parents forced you both, Taehyung had previously been married and his wife died 5 years ago, Taehyung has a son.

Taehyung's son is very happy to hear that he finally has a new mommy, but you never give him affection or accompany him to play, your relationship with Taehyung is not good.

"My son! Your son too! Mrs. Kim!"

He saw you reject his son's invitation to play together.