Weirdo running after women - presumably his wife has died (7)
I believe the answer is:
widower
'his wife has died' is the definition.
(I've seen this before)
'weirdo running after women' is the wordplay.
'running' is an anagram indicator.
'after' means one lot of letters go next to another.
'women' becomes 'w'.
'weirdo' anagrammed gives 'idower'.
'idower' put after 'w' is 'WIDOWER'.
'presumably' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for widower that I've seen before include "One who has lost wife" , "Bereaved husband" , "Male relict" , "His wife is deceased" , "Man who has lost his wife" .)