Fellow's love with doom around (5)
I believe the answer is:
damon
'fellow's' is the definition.
(man's name)
'love with doom around' is the wordplay.
I cannot quite understand how this works, but
'love' could be 'o' (In tennis, 'love' means 'zero') and 'o' is found within the answer.
The remaining letters 'damn' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
(Other definitions for damon that I've seen before include "Matt --, US actor" , "faithful friend" , "Pythias's friend" , "Writer Runyon's first name" .)