Upset a girl and suffered (5)
I believe the answer is:
ailed
'suffered' is the definition.
(ailing is a kind of suffering)
'upset a girl' is the wordplay.
I cannot quite see how this works, but
'upset' could be 'ail' (I've seen this before) and 'ail' is present in the answer.
The remaining letters 'ed' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'and' is the link.
Can you help me to learn more?
(Other definitions for ailed that I've seen before include "Became sick" , "Was unwell" , "Felt bad" , "Didn't feel well" , "was giving trouble" .)