Breasts leaking at odd times

valentin • trans dad///baby girl born 8/15/2020

So my breasts started leaking a few days ago and I've noticed that they always leak when I watch a video of someone laughing or crying. Even if it's an adult. It happens other times too but I've noticed it happening every time I watch a video like that. I know this can happen but I've only ever heard of it happening after the baby is born. Is this weird? Is it connected or just a huge coincidence? I'm confused