Dear Hanzze, this is a bit speculative, but I will try.
If you tell a lie, it is your
intention and wrong speech, not anybody else's. You
inherit the kamma for your intentions and actions.
If someone else passes on your lie, not knowing it is a lie, and has good intentions, it is still your lie.
It doesn't become the other one's lie, because he does not intentionally try to deceive.
But if he knows it is a lie, and still passes it on, to help you deceive, he is an accomplice and shares into the kamma of lying.
In short: You have to know that you are lying, and you have to intend to.
Is this helpful?