I know the idea of incest is "ew" to most people but I'm kind of logical about it. Ok, my first thought is ewww! too but then I think about it. The taboo against incest is actually a social thing (other than religiously that is), part of the reason why it's not accepted is because incestual relationships makes for greater risk in birth defects and genetic flaws for any kids that are born from that. But hey, ancient Egyptian royalty and other royalties throughout history practiced intermarrying because they wanted to keep the money and power in the family. Also, there are some societies that view those kinds of relationships acceptable.
Hehe, I type/talk too much. I've actually never seen Boy's and Bee's lakorns together all the way through but I have seen their scenes where they hug and I though, dude, they have no chemistry. Now I know why, fore sure! I'm just saying, I don't support it but I don't condemn it either.