Past being in love, really? (4)
I believe the answer is:
over
'past' is the definition.
(both can mean finished)
'in love really?' is the wordplay.
'in' says the answer is hidden in the clue.
'OVER' can be found hidden inside 'love really'.
'being' is the link.
(Other definitions for over that I've seen before include "Finished like cricket session" , "jumped fence" , "A bowler's round in cricket" , "Action far more drastic than necessary" , "Passed" .)