Attractive cast acting with me (8)
I believe the answer is:
magnetic
'attractive' is the definition.
('magnetic' can be a synonym of 'attractive')
'cast acting with me' is the wordplay.
'cast' indicates an anagram.
'with' means one lot of letters go next to another.
'acting' put after 'me' is 'meacting'.
'meacting' with letters rearranged gives 'MAGNETIC'.
(Other definitions for magnetic that I've seen before include "Having the power to attract" , "Able to attract metal, or charismatic" , "attractive result" , "Having the property of attracting iron" , "Attracting iron or steel" .)