ADVICE ASAP!

I recently realized one of my good male friends has a thing for me knowing I have a boyfriend. I cherish our convos and what we have as friends and nothing more. Is it fair to stay friends? Or should I disappear?

Im always very careful since realizing he likes me as so not to fuel a fire or give off the wrong vibe or validation of any kind and Ive told him we are only friends and im not willing to go any further. Its just hard because I have grown attached to him as my friend and im sad this could end it all.

What say u all?