you know love is like a gift. it is something you offer to antoher person, although you completely have no diea if it's going to be accepted or not.
if you think you realy are true to your word that you love that person, you'd tell him/her, no matter what the consequence may be. as the saying goes, "better to halve and lost than not to have loved at all". especially now that he's got a terminal illness. go right away before before what little time you have left is lost.
otherwise, you completely fprget about the whole thing. but then again, you know something like this will happen again eventually. better you face it now, if ever you fail, you'll know better next time.
Tell him... be completely honest with him about how you feel. I would hate to see you not tell him, only to regret your decision later. Just let the conversation goes where it needs to go... I'm sure everything will be just fine.
Good luck !
if he is really dying, im sure he wont also mind wanting the friendship back.. just go girl, do everything to win him back..im sure he needs you now more than ever..
you know what, just continue loving that person. loving at times seems hard. we love not becoz we are to be loved back but becoz its our own choie. its how we feel . loving just requires your own self. its an essence most people forget. they forget, indeed. just continue guiding and loving that person, and through it all , somehow, you can expect happiness and fulfillment in your heart. you dont go to a person just becoz youll be loved back but becoz you are happy being with that person. let it be, if he doesnt or couldnt love you , let it be. who knows maybe someday things will go your way.