Forgives former lover with profanity about end of romance (7)
I believe the answer is:
excuses
'forgives' is the definition.
(excusing is a kind of forgiving)
'former lover with profanity about end of romance' is the wordplay.
'former lover' becomes 'ex'.
'with' means one lot of letters go next to another.
'profanity' becomes 'cuss' (cuss is a kind of profanity).
'about' is an insertion indicator.
'end of' says to take the final letters.
The final letter of 'romance' is 'e'.
'cuss' going around 'e' is 'cuses'.
'ex'+'cuses'='EXCUSES'
(Other definitions for excuses that I've seen before include "Lets (someone) off duty" , "Defences of objective behaviour" , "Gives reasons for" , "Releases from a duty" , "Forgives" .)