Think about love as a timid person (5)
I believe the answer is:
mouse
'a timid person' is the definition.
'think about love as' is the wordplay.
'think' becomes 'muse' (musing is a kind of thinking).
'about' is an insertion indicator.
'love as' becomes 'o' (In tennis, 'love' means 'zero'. I am not sure about the 'as' bit.**).
'muse' going around 'o' is 'MOUSE'.
Can you help me to learn more?
(Other definitions for mouse that I've seen before include "Quiet person" , "Mickey or Minnie?" , "Domestic rodent" , "underhand office worker?" , "Small rodent - computer device" .)