Wolfgang Kuzminski
Wolfgang Kuzminski voted up K. B. Baldwin's answer
If you found out your lover (Husband/wife/significant other) was your sibling that you never knew you had (separated at an early age). Would you stay with that person as a lover/mate?

I think I would remain in the relationship. After all, there was/is love and attraction and a quirk pf fate isn't going to change that.  I would probably, however rethink my plans for a large family.  That said, I never did quite  understand Oedipus' problem, so maybe I was just not raised right.  . 

Wolfgang Kuzminski
Wolfgang Kuzminski voted up Anonymous' answer
If you found out your lover (Husband/wife/significant other) was your sibling that you never knew you had (separated at an early age). Would you stay with that person as a lover/mate?

If you both know that you're separated siblings, then you can both agree that you're incest if you still love each other. I mean, I wouldn't know. I just suck :c