"One Bulb To Bloom"
" There was one daisy in full flower to pluck, and one bulb to bloom while it watched. "
From the new Evelyn story we see that Evelyn is going to make the man's wife watch them get it on and/or just kill the dude. He's obviously the flower, where as the wife is the bulb.
And notice, Evelyn isn't talking about crushing the bulb, she's talking about letting it bloom. This creates people like Vayne. Evelyn does this shit on purpose, so all those theories guessing that Evelyn specifically left Vayne alive to create a monster, I would say that was a correct theory.
It also reminds me of what Aatrox did to Trynd.