Can you tell that I'm pretending to be strong but I'm really not?
No, I couldn't tell. Why are you pretending to be strong?
Because I'm weak and I don't want people to know.
Even if you think you are just pretending to be strong, acting strong when you don't feel it is a good quality. It is a strength in itself. You shouldn't put yourself down; tell yourself how strong you are instead.
I don't want you to start judging me for my faults, you know?
I'm not going to judge you for that, I'm going to encourage you to be and do better. Keep on telling yourself that you are strong and manifest that strength.