With model after love at first sight (8)
I believe the answer is:
landmark
'sight' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's a link between them I don't understand?
'with model after love at first' is the wordplay.
'with' becomes 'and'.
'model' becomes 'mark' (I can't explain this - if you can you should believe this answer much more).
'after' is a charade indicator (letters next to each other).
'at first' indicates taking the first letters.
The first letter of 'love' is 'l'.
'and'+'mark'='andmark'
'andmark' after 'l' is 'LANDMARK'.
Can you help me to learn more?
(Other definitions for landmark that I've seen before include "Conspicuous feature" , "Easily identifiable monument, for example" , "Damn lark (anag.)" , "historic event" , "Notable geographical feature" .)