Follow suit, holding hearts (5)
I believe the answer is:
chase
'follow' is the definition.
('chase' can be a synonym of 'follow')
'suit holding hearts' is the wordplay.
'suit' becomes 'case' ('case' can be a synonym of 'suit'**).
'holding' indicates putting letters inside.
'hearts' becomes 'h' (abbreviation used in card games e.g. bridge).
'case' going around 'h' is 'CHASE'.
(Other definitions for chase that I've seen before include "Engrave - hunt - pursue" , "grave, as before?" , "Pursuit" , "Hurry" , "trail" .)