Money putting an end to tender hearts in love (5)
I believe the answer is:
rhino
'money' is the definition.
(thesaurus)
'an end to tender hearts in love' is the wordplay.
'an end to' suggests the final letters.
'hearts' becomes 'h' (abbreviation used in card games e.g. bridge).
'love' becomes 'o' (In tennis, 'love' means 'zero').
The final letter of 'tender' is 'r'.
'r'+'h'+'in'+'o'='RHINO'
'putting' is the link.
(Other definitions for rhino that I've seen before include "one still charges in Africa" , "Large animal with a horn on its snout, in short" , "Animal hunted for its horn" , "old-fashioned bread" , "one might charge in Africa" .)