Rage, By Brian37 (AKA Brian James Rational Poet on FB/META and @Brianrrs37 on Twitter/X)

Toil Toil, my rhymes do spoil
Caldron of lava the passion does boil
Stiletto knife, blood drips in soil
Dejected lover my plans do foil
The viper in shade slick with oil
Petals of roses I smell their breath
The faithless lover soon meets their death
(end)

Serious Disclaimer: This poem is Hollywood, not real life. If your partner goes behind your back just leave them, you have no right to harm anyone for any reason. This is just entertainment. I was being a bit Shakespearian here.