Tempted, but left university looking embarrassed (5)
I believe the answer is:
lured
'tempted' is the definition.
('lure' can be a synonym of 'tempt')
'left university looking embarrassed' is the wordplay.
'left' becomes 'l' (common abbreviation).
'university' becomes 'u'.
'looking embarrassed' becomes 'red' (I've seen this before).
'l'+'u'+'red'='LURED'
'but' is the link.
(Other definitions for lured that I've seen before include "Seduced" , "Attracted" , "was enticing" , "Tempted or enticed" .)