Well, mrs./mr. anonymous, I’m sorry if I answered this late, but Its flattering how you think that . My friends have like me before and I deal with it as any other girl that likes me but in this case, since its a friend, Its less awkward and more easier to express yourself, so depending on weather your attracted to that friend in particular that likes you , then go with it because its better to talk to someone you know at least a little bit than a person you dont know at all, so approach how you would approach that friend all the time :) 

Feel free to ask more questions and thanks for the compliment <3