I don't mind telling you

I don't mind telling you (something)

I want to tell you something even if it's negative or embarrassing or depicts me unfavorably. I don't mind telling you that I paid way too much money for this computer, so shop around if you're looking for one for yourself. The movie was powerful—I don't mind telling you that I was sobbing like a baby by the end of it.
See also: mind, telling
Farlex Dictionary of Idioms.

I don't mind telling you (something).

I want you to know something. Tom: You have a beautiful garden. Mary: Thank you. But I don't mind telling you, it's an awful lot of work. I don't mind telling you, I was as pleased as Punch when my daughter won the race.
See also: mind, telling
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • I don't mind telling you (something)
  • I don't mind admitting (something)
  • I don't mind admitting, telling you..., etc.
  • come off worse
  • condemn
  • condemn (someone or something) as (something)
  • condemn as
  • take a poor view of (someone or something)
  • have a bad opinion of (someone or something)
  • have a low opinion of (someone or something)