[M4F] Extreme submission by loved one

My favorite kink is where my loved one submits for my benefit or pleasure and gets ready for extreme sacrifice and suffer limitless pain !

I love the idea where my loved one agrees rather willingly to suffer to get me benefitted.

I like to make it kinky with my character emotionally manipulating my loved one, showing that he loves her , while using her / getting her used brutally and she willingly accepting it out of love.

I dont have limits in how 'closely' the person is related to. The closer the better ;). I dont enjoy playing strangers as the emotional content goes missing. So it has to be either very close family or wife / gf.

The roles can have sexual content or can be completely without sex.