I thought that having been shagged all night would make for a pretty good explanation here 
It’s so heartwrenching, isn’t it? 
See below:
I would translate this as “I love you too, but … [there is this other guy I am together with, so we cannot be together]”.
So in my opinion that’s how he answer’s Nigel’s feelings. (And also by sacrificing himself for Nigel, and for cutting his neck for him to demonstrate his seriousness.)
Yeah I also thought this definitely needs a conversation among the three of them at some point.
Yep, I was really surprised and satisfied about that.
Yep, that’s what I understood as well. 俺達 being Kaito and Geoffrey (as he gives his note in direct speech).
Haha nope forget about it 
This multi-layered cliffhanger is just too strong…
Enjoy! I won’t run away any time soon 