The main reason why this was working is because no one in their family knew.

And they did their best to hide it, to act like everything was normal and they were just two other normal bionic siblings getting along, with nothing to hide.

But every time Tasha mischievously asked her about some boy, every time his "parents" insisted on introducing him to an acquaintance's daughter, they would look at them wishing they would stop pairing them up with someone else, when the two of them were already happy together.

But they cannot blame them 'cause how could they know? ~ยง