I replied that " no I don't but I do like him and am grateful that he has always been in her life and loves her sooo much. "

Just don't know why after all these years she is thinking of this stuff now 
Oddly, I just had a similarly awkward conversation with The Boy 
For what it is worth in my experience ...........
They always do. Mine did ages after their mother and I split and they were grown up. Partly I suspect they are saying "Do you still love me?"
I floored my elder daughter completely by telling her the truth.
The oldest (boy) just shrugged off my explanations even though he had posed the question...... Perhaps we are not on the same wavelength (perhaps we never were) Anywhoo I haven't heard from him in donkey's years but since he is 42 I don't suppose I ever will now. Daughter still stays in touch which is nice.