Timing
They said "Timing is everything", and Gael believed that. No matter how much you plan, things just happen, and there is nothing you can do about it.
You could have control over some things but chose not to for the mere fact that you're being lenient, just like allowing J to come home because Gael couldn't ignore Mika's sulking. Jesus Christ, that girl was cheekier than Gabriella. After talking to J yesterday, Gael expected him to come back later tonight after ensuring their business in Australia.
Most importantly, Gael believed that today was the right time to tell Angela what he'd been holding in for a while. And he would do it properly because she deserved it.