have (one's) (best) interests at heart

have (one's) (best) interests at heart

To be primarily concerned with what would benefit one. I know you don't agree with some of the decisions I've made, but you have to trust that, as your mother, I have your best interests at heart.
See also: have, heart, interest
Farlex Dictionary of Idioms.

have someone's best interest(s) at heart

to make decisions based on someone's best interests. I know she was only doing what would benefit her, but she said she had my best interests at heart.
See also: have, heart, interest
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

have somebody’s (best) interests at ˈheart

want somebody to be happy and successful even though your actions may not show this: As a father, he always had his little girl’s best interests at heart.
See also: have, heart, interest
Farlex Partner Idioms Dictionary
See also:
  • one of the boys
  • one of the lads
  • be one of the boys
  • be one of the lads
  • be one of the lads/boys/girls
  • lad
  • up on (one's) ear
  • wear rose-colored glasses
  • be well in
  • be well in (with)