If you had a hot step-brother or step-sister would you have a intimate relationship with them?

I have a step-brother and the answer to your question is absolutely not, that is simply not in my character. I personally find it repulsive to even think about it.

Why not? No more difference than doing a roommate or dorm mate in college. After all, they are NOT related.

BTW, I guess AEv step-brother is not hot.

BTW2, different societies have different "rules" on all that.

BRITANNUS (shocked):

Caesar, this is not proper.

THEODOTUS (outraged):

How?

CAESAR (recovering his self-possession):

Pardon him, Theodotus; he is a barbarian, and thinks that the customs of his tribe and island are the laws of nature.

Caesar and Cleopatra, Act II -- [George Bernard Shaw]

thats the last thing on my mind, and should be the last on yours !

No Sir, No way, No how! Yuck! You're really kidding right?

I don't have any step-sis and my sentiments are same as AEVANS - even the thought of it is repulsive.