Boyfriend in Germany keeping close (6)
I believe the answer is:
ending
'close' is the definition.
('ending' can be a synonym of 'close')
'boyfriend in germany keeping' is the wordplay.
'keeping' says the answer is hidden in the clue.
'ENDING' is hidden in the letters of 'boyfriend in germany'.
(Other definitions for ending that I've seen before include "Closure" , "Gin den (anag.)" , "Armageddon?" , "Termination, conclusion" , "Coda" .)