Need help

Hi, guys I'm new here.. And here is my story...
I got reject from a cancer man... We've been friends for 6 years.. And we are bestfriend.. We hangout and played with eachother a lot.. One day he told me that he think he liked me .. And I didn't say anything .. We'll because I didn't know my heart.. And then we didn't talk much about that and he told me that we still friend and just act like nothing happen .. And he still the same like before.. And one more thing he also left to live a broad as we'll .. Just 2 month ago he came back ... And we hangout with a group of friends.. And in one day I suddenly realized that I have a feeling on him... I kept asking myself and find an answer.. And I decided to tell him.. But he reply that he like me too becuse I'm his best friend.. Oops, I'm kinda confuse with him .. I really can't understand ... and I don't know what to do next ...
And I want to forget him but it's a bit difficult because I can't stop contact with him ..cuz we're friend.. If I do that other friends will know and also I don't want him to pity me or worry something like that .. I have to be strong and act like I'm okay with that ..

And the reason I told him is because I think I could move on and stop think about it.. But reality I can't forget it and moving on...