Soon despicable fellow gets a woman to have close relationship (9)
I believe the answer is:
inamorata
'woman to have close relationship' is the definition.
(inamorata can mean a female lover)
'soon despicable fellow gets a' is the wordplay.
'soon' becomes 'in a mo' (in a mo).
'despicable fellow' becomes 'rat' (rat can mean a despicable person).
'gets' says to put letters next to each other.
'inamo'+'rat'+'a'='INAMORATA'
(Other definitions for inamorata that I've seen before include "Female lover" , "Sweetheart" , "A woman loved" , "Someone fancies her" , "loved one" .)