Come down in favour of love! (4,3)
I believe the answer is:
fall for
'love' is the definition.
The answer and definition can be both to do with human feelings as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'come down in favour' is the wordplay.
'come down' becomes 'fall' (falling is a kind of coming down).
'in favour' becomes 'for' (I've seen this before).
'fall'+'for'='FALL FOR'
'of' is the link.
Can you help me to learn more?
(Other definitions for fall for that I've seen before include "Succumb to attraction, or be taken in" , "Be taken in by - become infatuated with" , "Be taken in by - romantically?" , "Be taken in by deception - or be in love" , "Have romantic feelings for - or be taken in by?" .)