FWB with Cancer man

I still think they can make it work. At one point he loved you enough to give you a chance and if you can somehow prove to him that you're able be trusted again to the point he can love you in the same capacity again (which is a hard task) and fully commit to each other without all of the game playing, I think there may be hope. Once a cancer is cold it will be hard to get them back but if they love you enough, you could pull it off. But it'll take A LOT of work and revealing for that to work.