Crossword Genius

To confuse a lemming could be heartless! (6)

Ross

I believe the answer is:

mingle

I'm a little stuck... Click here to teach me more about this clue!

'to confuse a lemming' is the definition.
I can't judge whether this defines the answer.

'could be heartless' is the wordplay.
'could' becomes 'ming' (I can't justify this - if you can you should believe this answer much more).
'be' becomes 'lie' (lying is a kind of being).
'heartless' means to remove the middle letters.
'lie' with its middle taken out is 'le'.
'ming'+'le'='MINGLE'

Can you help me to learn more?

(Other definitions for mingle that I've seen before include "Blend" , "Mix among others" , "Join the crowd, mix in" , "Mix (socially)" , "Circulate, socialise" .)

I've seen this clue in the Evening Standard.
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