High temperature apocalypse, my cheating fiancé died

During the extreme heatwave, I delivered a substantial amount of precious supplies to my beloved fiancé.

He claimed that his mom thought I was stingy and cheap.

Both of them even had the audacity to come to my house and take over.

Later, I discovered that my fiancé was the mastermind behind all the deceit.

He not only sold the water and food his mom had given me at exorbitant prices but also handed my supplies to the other woman.

He even locked his mom and me out, hoping the sun would bake us.

But he forgot, neither his mom nor I are easily defeated.