Online movement for love, perhaps (7)
I believe the answer is:
emotion
'love perhaps' is the definition.
(love is a kind of emotion)
'online movement' is the wordplay.
'online' becomes 'e' (abbreviation for electronic, e.g. in ecommerce).
'movement' becomes 'motion' (synonyms).
'e'+'motion'='EMOTION'
'for' acts as a link.
(Other definitions for emotion that I've seen before include "Intuitive feeling" , "Feeling like love or hate" , "eg Anger, fear, joy" , "A strong instinctive feeling" , "Strong feeling as of love or hate" .)