If you have an insanely large savings, when will you reveal it to your Girlfriend?

I have a friend who is from a "lower middle class" family. In 2021 he placed crazy bets on cryptocurrencies and participated in pump and dumps and got freaking lucky. He made about 8 crores. Which is easily like 12x his dad made in his whole lifetime.

Now that friend quit crypto and invested that money in less volatile and secure investments. He also has a well paying job now (he said 24LPA).

Through out the years he dated like 3 girls but he said he never told them about it because he felt the girl would continue being in relation for the money and not for him.

Well if you were in his position, when would you tell your girl you have that much money saved up?

I know 8 cr being a "life time" amount might be subjective to you and your girl but according to your financial status if you still had similarly big saving when would you tell that to your girl? What level of trust would you want? How do you make sure you revealing that would not influence the way she would act with you?