Be quite sure you're very sensitive (4,8)

I believe the answer is:

feel strongly

I'm a little stuck... Click here to teach me more about this clue!

'sure you're very sensitive' is the definition.
I can't judge whether this defines the answer.

'be quite' is the wordplay.
'be' becomes 'feel' (feeling is a kind of being).
'quite' becomes 'strongly' (I am not sure about this - if you are sure you should believe this answer much more).
'feel'+'strongly'='FEEL STRONGLY'

Can you help me to learn more?

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.