More than any word with a similar meaning to most etc
“Love you most”
“I love you more”
“Yeah but I love you mostest”
“Okay that’s a lot, you win”
Boyfriend: I love you the most.
Girlfriend: I love you the mostest.
The most of anything ever possible (more than the most)
I care about you the mostest.
The winning ending to an I love you more match.
Charlee-Jennifer: I love you.
Mommy: I love you more.
Charlee-Jennifer: I love you most.
Mommy: I love you mostest.
Charlee-Jennifer: wow, you love me that much mommy.