Goes BOTH ways -
In the heat of the passion - the guy that is OK with snuff - could beg to be snuffed, and the snuffer - could figure - well, he has been here long enough - and no one has been looking for him - let's do it -
I think I would have to start out "slow" - but, yes - I would enjoy a live-in lover that would get HARD at the suggestion of snuff - cumming with a shaft in his ass - and feeling his cock squirt, as I drag a sharp knife across the base of his cock -
It would so much fun - to role play, exchange blood, cum - and then do it -