You cannot say " I have no heart to do sth." For example, Chicken soup for soul, not for hearts. ( Z- s! v; ?& C
Your context is not very clear. So can you explain the contexts more clearly? % I/ a" [& r$ v1 g4 I
Why you don't want to bother the boy again?
For the first context, just say I am sorry to bother you again. : q+ r- q: L7 fFor the second case, I don't think you can use hearts in this expression. You can say I am not meant to do sth...