"At some point I have to realize that some people can stay in my heart, but not in my life.”?

it means that sometimes people you love or care about or think about deeply , arent meant for you're life , or arent good for yourlife , like maybe a long lost lover from high school has met u after ten years , but you don't want to have an affair with them because you're with your husband now , its like some things yuo can love or cherish in your heart but they are not  meant to be in your life , like you cant have them