Made allowances for Johnny briefly with Kelly? (8)
I believe the answer is:
condoned
'made allowances for' is the definition.
('condone' can be a synonym of 'make allowances for')
'johnny briefly with kelly?' is the wordplay.
'johnny' becomes 'condom'.
'briefly' means to remove the last letter.
'with' says to put letters next to each other.
'kelly?' becomes 'ned' (Ned Kelly).
'condom' with its last letter removed is 'condo'.
'condo'+'ned'='CONDONED'
(Other definitions for condoned that I've seen before include "Sanctioned" , "Excused, overlooked" .)