i'd avoid dating conjoined boyfriends if i were them. Imagine if 1 relationship is not working out and another is great. With 2 diffrent guys, the one with bad relationship can just move on and find another guy. But if their boyfriends were also conjoined, she can never avoid her ex-boyfriend since her sister is still dating her ex-boyfriend's conjoined twin.
Imagine the problems, if all of them were married or living together! She can't move out and she can't kick him out either!
Imagine the problems, if all of them were married or living together! She can't move out and she can't kick him out either!