Stole time with new gift from Cupid on leisure craft (6,4)
I believe the answer is:
narrow boat
'leisure craft' is the definition.
'stole time with new gift from cupid' is the wordplay.
'stole' becomes 'boa' (I've seen this before).
'time' becomes 't' (abbreviation).
'with' means one lot of letters go next to another.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'gift from cupid' becomes 'arrow' (Cupid is said to fire arrows).
'boa'+'t'='boat'
'n'+'arrow'='narrow'
'boat' put after 'narrow' is 'NARROW BOAT'.
'on' is the link.
(Other definitions for narrow boat that I've seen before include "Canal barge" , "Vessel designed for canals" , "Canal craft" , "specialised vessel" , "Traditional canal transport" .)