[Nyororin]

I`d sleep with someone to save another person`s (if they were important to me) life, regardless of who the person I had to sleep with.

I mean, the unpleasant experience of sleeping with them would literally be done in a few minutes. Losing someone is for life. It isn`t quite on the same level.
Weighing two lives is one thing, but... A few minutes of suffering in exchange for someone`s survival seems like a pretty good deal to me.