Being ardent, yearn to embrace a girl (6)
I believe the answer is:
loving
'being ardent' is the definition.
(thesaurus)
'yearn to embrace a girl' is the wordplay.
'yearn' becomes 'long' ('long' can be a synonym of 'yearn').
'to embrace' means one lot of letters goes inside another.
'a girl' becomes 'vi' (**).
'long' placed around 'vi' is 'LOVING'.
(Other definitions for loving that I've seen before include "Affectionate and amorous" , "Doting" , "Showing great affection" , "See 13" , "'Friday's child is . . . . . . and giving'" .)