In MGSV, why does Eli/Liquid call Venom “Father”?

How would Liquid know that Big Boss was his pops?

During the events of MGSV, does Liquid even know he is a part of Les Enfants Terribles?

Lastly, if Liquid was so smart and if he was actually aware of the LET project, why would he be so angry at Big Boss? Especially since Big Boss felt that the project was a betrayal from Zero/The Patriots?

If Liquid knew all of that wouldn’t he be more inclined to help his “Father” than rebel?

How would Liquid know that Big Boss was his pops?

During the events of MGSV, does Liquid even know he is a part of Les Enfants Terribles?

Lastly, if Liquid was so smart and if he was actually aware of the LET project, why would he be so angry at Big Boss? Especially since Big Boss felt that the project was a betrayal from Zero/The Patriots?

If Liquid knew all of that wouldn’t he be more inclined to help his “Father” than rebel?