Skulk around, not the first to kiss (5)
I believe the answer is:
mooch
'skulk' is the definition.
(both can mean to sneak around)
'not the first to kiss' is the wordplay.
'not the first' means to remove the first letter.
'to kiss' becomes 'smooch' (smooch is a kind of kiss).
'smooch' with its first letter taken off is 'MOOCH'.
'around' is the link.
(Other definitions for mooch that I've seen before include "Wander aimlessly" , "Loiter in bored fashion" , "loaf" , "Slouch about" , "Loiter in bored manner" .)