Obsessed with small glove? (7)
I believe the answer is:
smitten
'obsessed' is the definition.
(smitten means obsessed with someone)
'with small glove?' is the wordplay.
'with' means one lot of letters go next to another.
'small' becomes 's' (abbreviation - e.g. clothes size).
'glove?' becomes 'mitten' (mitten is a kind of glove).
's'+'mitten' is 'SMITTEN'.
(Other definitions for smitten that I've seen before include "Severely affected (by something)" , "Strongly affected (by something)" , "Obsessed (when in love?)" , "bowled over" , "Head over heels in love" .)