Anger was a normal step in the grieving process, and one Fisher dealt better with. Angry was better than sad any day. Anger he could understood.
Taking a moment to think of Will's question, Fisher decided to give him an honest answer instead of a therapist answer he'd learned to dole out in these circumstances. "If I could never tell James how I felt... I don't know what I'd do. I'd probably do exactly what you're doing, deny anything. Pretend like he hardly mattered." He and Will were alike in that way. Better to just bury things, forget they ever felt anything.
"But regardless of what I wanted, the point is, shit's gonna happen whether you like it or not. And even if you try and forget about Haddon, about how much you cared about him, that doesn't change the fact that you did care about him. And it hurts right now, but..." Fisher couldn't finish that thought. Because he'd never lost someone he really cared about, so he didn't know if eventually the pain would go away. But he did know how it felt to break up, and in this case, it was somewhat the same. "You move on eventually. Because you have to."