Regalar los oídos

[ROBINDESBOIS]

No quieres que te regale los oídos means adular, Is there an idiom in English?

[hermit]

hi robin - "regalar los oidos" or "adular" in english is "to flatter".

one idiom that comes to mind is "to butter someone up".

hermit

[Tomisimo]

I agree with hermit; "to butter up (http://www.tomisimo.org/idioms/en/to-butter-someone-up-856.html)" is probably the best idiomatic translation.

[María José]

Less polite: to suck up to