After endless criticism he had to get married (8)
I believe the answer is:
attached
'married' is the definition.
('attached' can be similar in meaning to 'married')
'after endless criticism he had' is the wordplay.
I cannot really understand how this works, but
'he' could be 'che' and 'che' is located in the answer.
'had' could be 'd' (I've seen this in other clues) and 'd' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'to get' acts as a link.
Can you help me to learn more?
(Other definitions for attached that I've seen before include "Fastened together, joined to" , "Bound" , "Married" , "Joined or fastened to something" , "Joined, connected" .)