In a romantic move, dropping English, I garbled romantic Latin phrase (4,6,5)

I believe the answer is:

amor vincit omnia

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'romantic latin phrase' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'in a romantic move dropping english i garbled' is the wordplay.
'dropping' is a deletion indicator.
'english' becomes 'E' (abbreviation as in OED).
'garbled' indicates anagramming the letters.
'in'+'a'+'romantic'+'move'='inaromanticmove'
'inaromanticmove' with 'e' taken away is 'inaromanticmov'.
'inaromanticmov'+'i'='inaromanticmovi'
'inaromanticmovi' is an anagram of 'AMOR VINCIT OMNIA'.

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