May he win a bride for himself also! (4,3)
I believe the answer is:
best man
'may he win a bride for himself also' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'may he' is the wordplay.
I cannot quite see how this works, but
'he' could be 'man' (I've seen this in another clue) and 'man' is found within the answer.
The remaining letters 'best' 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).
Can you help me to learn more?
(Other definitions for best man that I've seen before include "Key union facilitator r" , "Groom's friend" , "Groom's primary attendant at wedding" , "Bridegroom's friend" , "May he win!" .)