Boy you might love is one wanting love, thank goodness (6)
I believe the answer is:
nephew
'boy you might love' is the definition.
I can't tell whether this defines the answer.
'one wanting love thank goodness' is the wordplay.
'wanting' suggests deleting specific letters (to want something can mean to lack it or need it).
'love' becomes 'o' (love means zero in tennis).
'thank goodness' becomes 'phew' (I've seen this in another clue).
'one' with 'o' taken out is 'ne'.
'ne'+'phew'='NEPHEW'
'is' is the link.
Can you help me to learn more?
(Other definitions for nephew that I've seen before include "A young male relation" , "A sibling's child" , "Family relative" , "Kinsman" , "Male relative" .)