Don't Kill People Dammit!
10 parts Ongoing Canada was happy that his best friend Mexico had a crush on America.
He was less happy knowing that Mexico was willing to go full yandere for him though.
And so, to avoid a situation with such limited appeal (i.e., Mexico murdering everyone physically or emotionally close to America), Canada decided to become Mexico's wingman/mentor/shoulder Angel.
Because, at the end of the day, nobody really wants a yandere following them around, and if you do, you are a complete and utter idiot and deserve the hell you paramour will put you through.
(Basically, I was sick of seeing so many basic yandere stories in my recommendations (which I don't even FRICKIN READ WATTPAD GET A HINT-) And I wanted to contribute something to this trashy yandere-simping genre that's more funny and less try-hard edgy. Yanderes are not sexy. If you really find them appealing, I'm so very sorry that you are that desperate for love)