It's an unusual situation but it doesn't cross any boundaries in my opinion. They're not blood related to their actual partners after all, which would be the real taboo (￣∇￣")
Yeh I got ur point ┗( T﹏T )┛
My dad married my stepmother, while my aunt( his sister) married my stepmother's brother. It's strange, not gonna lie, but now my siblings are cousin-siblings with my cousins. It's just bad when your entire family's got a fight and you have to choose a team (￣∇￣")
oh that's soo confusing but wow (⊙…⊙ )
Wait isn't weird that ur brother is fucking ur boy friends brother??