I love bees flying around second of hives? That's fairly sure (1,7,2)

'that's fairly sure' is the definition.
(phrase used to say you think something is true)

'i love bees flying around second of hives?' is the wordplay.
I cannot really see how this works, but
'i' is within the answer.
'love' could be 'o' (love means zero in tennis) and 'o' is present in the answer.
'second' could be 's' (common abbreviation) and 's' is present in the answer.
The remaining letters 'believe' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).