I'm trying to express the following with the verb laugh:
Given a certain condition (that has not been met yet), I will be happy.
When she laugh, I'll be happy.
However, I'm unsure if the verb goes like above or with the "s", as in "laughs"? I feel like "laughs" suits this sentence:
When she laughs, I'm happy.
But that is not the meaning I want to convey.
I know that many times, there's more than one answer, so I'm happy to hear all opinions regarding informal and formal conjugations. If it helps in any way, this is what I'm trying to say in Spanish:
Cuando (ella) ría, seré feliz.