Lavished affection on a boy at a party (5)
I believe the answer is:
doted
'lavished affection' is the definition.
(I've seen this before)
'boy at a party' is the wordplay.
'boy' becomes 'ed'.
'at' means one lot of letters go next to another (I've seen this in other clues).
'a party' becomes 'dot' (I can't explain this - if you can you should believe this answer much more).
'ed' after 'dot' is 'DOTED'.
'on a' is the link.
Can you help me to learn more?
(Other definitions for doted that I've seen before include "Showed (excessive) love" , "- Upon means was foolishly fond of (someone)" , "was foolish" , "Was weakly affectionate" , "Lavished affection" .)