Love, kiss me madly — we're Northerners! (7)
I believe the answer is:
eskimos
'we're northerners' is the definition.
(people who live near the North Pole)
'love kiss me madly' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'madly' is an anagram indicator.
'o'+'kiss'+'me'='okissme'
'okissme' anagrammed gives 'ESKIMOS'.
(Other definitions for eskimos that I've seen before include "People inhabiting the Arctic region" , "The Inuit people" , "Is smoke made by Artic people ?" , "Igloo dwellers" , "Northern dwellers" .)