Lets say that theres a girl of interest, and then there is that girl of interests' friend, who you are also friends with.

If the friend mentions that she thinks you like her friend, or asks if you do infact like her friend during conversation...
(Keep in mind this is when the girl of interest is NOT around)

How should this be answered?

similar thing happened to me
here's how it goes:-
my good female friend in college asks me "How do you like ~insert name of the girl(her friend)~?"
I said "Well,she's ok but i can't be sure of anything yet because i never interacted with her too much."

The girl my female friend was asking me about is her very good friend in college and she had been giving me IOI's too.

I discussed the whole situation with another good female friend of mine and she said that my reply was good.

In this case my reply really was true because i really hadn't talked to her much.(at that time)

Hope this helps
Happy Sarging

Whenever someone asks me a question I don't want to answer I do one of two things:
Reframe the subject to something completely different
For example:
"Do you like xxx?"
"Hm, I don't know. It depends on how you define liking someone I guess. I read this article a while ago about how people often don't actually know very often what they like" -> Transition into subject like that (it helps if you actually have read an article but if not just make something up that sounds interesting).

or
"Do you like xxx?"
"Hey, I heard the other day (pretend like you didn't even register the question)... put some random thought/rumor/story here".

Very simple. Only annoying people would re-ask the question if you firmly enough reject answering it implicitly.

Could be answered in a number of different ways depending on your personality.

a 'yup' with a big cheesy grin.
an 'idk she's cute but I don't know her very well.'
a 'why do you care? jealous I'm not giving you all the attention?' With a smirk.

That's how I would handle it anyway.

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