Survive as partners, heart-broken? (7)
I believe the answer is:
weather
'survive' is the definition.
(I've seen this before)
'partners heart-broken?' is the wordplay.
'partners' becomes 'we'.
'broken?' indicates an anagram.
'heart' is an anagram of 'ather'.
'we'+'ather'='WEATHER'
'as' is the link.
(Other definitions for weather that I've seen before include "Withstand" , "Conditions outside; survive (crisis)" , "Survive (ordeal); be worn away naturally" , "Come safely through; erode" , "Local atmospheric conditions" .)