Is step bro/sis sex as acceptable as any other to you?

Dad died before they were technically step sisters but they seemed interested so the though of course crossed my mind as dad died off from cancer and I for a week kinda planned to make a couple moves still. I didn't and won't but either way the reality of the thought surfaced. I was told it's fine growing up if they're considered step bro/sis. Just wondered what y'all think in general. Since the whole transaction of family is weird and stressful and confusing

Is step bro/sis sex as acceptable as any other to you?
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