Why did Mario break up with Princess Peach?

setup: Why did Mario break up with Princess Peach?

[Mario] shouting to [Toad] Hey-a! Move that ziti into the back room.

[Princess Peach] tapping [Mario]’s shoulder It’s over. I can’t handle this life of pasta and sauces. I’m leaving.

[Mario] turning to [Peach], shocked Hey-a! I-a didn’t-a know-a! I can-a change-a?!

[Princess Peach] It’s over. I can’t handle this life of pasta and sauces. I’m leaving. You can have Yoshi, but I’m taking Toad with me.

[Mario] begging Give me another-a chance-a! Here watch-a! [Yoshi]! Toss-a the stuff-a!

(([Yoshi] spits out pasta sauce kits into fire))

[Princess Peach] OK. I’ll stay, but no more Italian food.

punchline: He told her, “It’s not you, it’s-a me, Mario!”