Well, he did call himself "No Longer Human".

It becomes a symbol of their love. A vow sworn only to each other. Fidelity, if you will.

Bah. Drama queen.

What is that all about?

At least become immortal first, then we'll talk.

That is... well... another kind of intense...

...If I'm not mistaken, one of the great writers of the modern era participated in several double suicides, but kept coming out the only survivor.