Was There A Reason Nikolas Chose Valentine's Day?

I can imagine multiple reasons why he chose Valentine's Day for his school shooting. He recently broke up with his girlfriend and didn't feel loved by anyone in the world. I wonder though, was there ever a specific reason or motive that he mentioned for the date? It's been almost 2 years since Parkland and I've been thinking about this recently.

On the morning of the shooting, he already planned to not go to school since it was valentine's day and he told the people he was living with that "he doesn't go to school on valentine's day". That afternoon, he tries to call his ex-girlfriend who hung up after 9 seconds and told him to leave her alone. This is what probably set him off from there because, an hour or two later, he calls an uber who takes him to stoneman douglas and he then carried out his attack. So i don't think feb 14th was a date he always had in mind, it's just that the specific chain of events that happened that day led him to bring to life what he always wanted to do. (Also, the night before, he claimed he heard an evil voice in his head telling him to burn, destroy, kill).

He just chose that date because he was jealous and probably mad of breaking up his GF in his past, being depress, and how everyone is loving each other. Plus, his "demon" thingy are full of bullshits

I'm actually surprised that there aren't more mass shootings on Valentine's Days.

So am I. You would think that many incel-types or angry teenagers would carry out attacks on Valentines Day but I guess not. In relation to Cruz, I agree that perhaps it was due to his feelings about his ex or just his general resentment at the world and coincidentally Valentines Day was the day that he decided to carry out his attack.